Class 11 Chemistry Chapter 15 Hydrocarbons | Maharashtra Board || Aromatic Hydrocarbons

Today's topic, which will be our beloved and simple one, is a child. Aromatic hydrocarbons, so I too want to leave my impression in your hearts They want to be the ones who are called, if even the one who is mentioned is the one being referred to; if they desire to be the ones called, then what is it that has come into the possession of the one who is called? And in 7 parts, we'll be looking at some topics that are linked to your 12 standards. So please don't skip this at all Today's topic, which will be our beloved and simple one, is a child. That's the one we're looking for—the child who is going to be born is ours, an aromatic hydrocarbon. And this aromatic hydrocarbon, the child of carbon in the reagent, isn't it? I will tell you exactly, your 12th board exam results are out. So therefore, you will carefully look here at all the reactions Alright, let's start our little topic. It belongs to our part number seven. The child today, who will be our topic, is aromatic hydrocarbon. Then I will show you a simple one, first a case. You'll understand it easily, it's just a small thing. Alright, look at this You will see this benzene This benzene is the aromatic hydrocarbon, isn't it? Is this a cyclic compound containing an alternating double bond? There are so many things I need to discuss regarding this. And it doesn't have hydrogen atoms at all positions. Atoms are these things, kid. Today, I want to discuss this with you. Regarding this aromatic hydrocarbon, Joki their basic cycle It is structured, and thus this benzene is not a cyclic pass. So, why does arithmetic hydrocarbon occur in the first place? And where does it exist in nature? So, we've seen all these series—what kind of smell does it have? What is his order? Its melting point is high. Its boiling point is high. And our own children, we will see them here Alright, let's start with the first aromatic hydrocarbon. Where are these bicyclic organic compounds collected from natural sources? Now, what exactly is balson? Have you ever seen a mango tree or any other tree? If you make a slight cut on the tree and leave it for a while, you'll see... What is in this? Present are the compounds that are aromatic. Remember, we also refer to these substances as aromatics. That's exactly the case: benzene is an aromatic compound, and its aromaticity is remarkable. The meaning is that whatever structure you see on memory, whatever thing I I'll make it such that benzene will remain common; in other words, benzene will be our parent group today, present in every aromatic compound, and that's right, your beloved benzene. Okay, now let's start your topic from here. How would you replace this to create different aromatic compounds? Let me tell you, look here, this is your benzene. And if you've put CS3 here, then this too is your aromatic compound. You call it "Tolly," and if I make another structure, this one we call "Finale." This is also your aromatic compound, which contains benzene. Another one, I'll make it right here And in this case, what will be your parent group of benzene, will it be present? We call this naphthalene. Here they speak Yes, naphthalene The parent group here is our benzene itself. So, we also refer to all these structures as aromatic compounds. Let's see ahead. Now that we've understood all this, what exactly is benzene? There's a separate, lovely topic about it, which I'll read to you just as I'm explaining it, so you'll clearly understand exactly what good benzene is. Okay, listen carefully. First, look at the first point I'm giving you, the basic point. On top of the second turbots, the second turbots will go up, the fan's memories all The festival is ours, benzene, fine, yes, benzene, that year, the festival was held in a proper manner. We are aware and have used Aquaratay Acradz for this purpose. HALU benzene. This is just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an 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one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just 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ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary one, just an ordinary There is a shop on the Gabs road, and Hurki's mistakes are many. Point No. 3 We will drink water. that these This is its Melting point Doling Point Yes Physical Order Dhian Tus Una Point No. 3 I will drink water. that its physical So physical properties About You were a walking point. How is the situation? We need to write down everything in detail. From the Falons, Paraswal Rao, you will be covered first of all, the child which is your child is Apo. What is the meaning of "Laf Nais Dulra Khamuche Krenta Ka Mangara Krokrokastikath Kya Khamaa"? There is certainly a connection between the Cracovian troops and you, my friend. The other half of Africa, he brought them to the throne. In Dheeviurrt, the man named Mao D had a fierce argument about the miasma, and then about benzene. The bullfrog pond Ballyn Pond found Basic Base Re Bajji Ma, 650 Calorifics Naked, he stood on the ground, his body trembling with cold. Yes Kichhi Prana, the first ray of dawn, arrived in my heart. 114 Who knows what it would have been, if only Balley had been in the midst of the carbons. So, what is the valve of acetylene, and is it a mercury vapor pipe? That is, for the preparation of benzene, 6 to class, Prof. Bat. It is widely believed that the Banjara people are known as "Banjara" by their own people. Fine, fine, compound is correct, and C6H12 is the final group. Yes, the final group. Now, sir, what did you write at the end? The final group? Well, I'll give you the exact one. Lying here, one H, my dear, if this H is suffering, then what will our children become, living here? Yes, something like this will come our way, why? Because an H has already happened here. Now, if an H has been removed, we refer to it as the terminal group. Which group says "child," Yes Final Group, where its formula takes shape C6H5, what will happen to the child, yes C6H5, I think all the children Attilis has understood so much data about benzene, okay, let's go, this kid has quite a few important points for you. Regarding benzene, that benzene is aromatic, okay, let's move forward, okay, let's go ahead quickly, and here we will look at the next topic, the difference between aromatic compounds and aliphatic compounds. Carbon is present, you know, if you take benzene, you'll get more carbon in it, right? And in aliphatic compounds, what is the percentage of carbon? There are also people, and now let's assume, any molecule's center, higher 1% of the land in the Hadingus Titana region has been submerged, and the coastal areas are gradually sinking... There is no trace of anger in him. Ingi Ma'in's alternative, and double jamhar raton they were I showed you Banjin. These are alternates, waghpat, and double jamaar were What are carbons in this? You will have your own benzene, won't you? Now, later on, I'll tell you that addition reactions do not occur in it, but in your aliphatic compounds, we can carry out addition reactions. The second thing is this: I'll now tell you how to recognize an aliphatic compound, which contains a double bond. For example, if you add BR2 or KMnO4, then KMnO4 will turn pink. No, you can't say that. It's in violet color, okay? So, just like you'll put this in Either these colors won't fade quickly, or we'll realize that there's a double layer there. Hey, I can't do this camouflage or any action, meaning there's no decolorization here, so you won't be able to detect it. The last point referring to basicity reaction—here, basicity reaction occurs. This is it. That's exactly how I feel. Let's move forward. We move forward, and we will see what happens. structures of benzene This is going to be a very important topic. Because there are so many things in it There are many explanations. Some scientists will come, the genes have arrived. Benzene has been described very well. First, if I Let's talk about the formula. What is the formula? formula Do you all know the formula? C6 S6 Like if I make its structure In this way, the structure of benzene It becomes / It turns out What are the structures of benzene called? next open chain structures of benzene No, it doesn't happen. so cannot form open-chain structure Alright Our benzene's open chain structure It's not possible because I've just given you a lot of aromatic compound shown there It was absolutely a closed chain structure, alternating. There was a double bond, and some groups were present in this manner. Let's take a look at some more things. this one inside the structures The child who is yours, benzene Isn't it? If you have it in him Caimeno 4 or anything added to it It is not decolorized, that's correct, because Its reactivity is not that good because What is benzene, it goes very much is stable, so if you If you add Cameno 4, then the one A straight-chain carbon chain anywhere in it There is a double bond, and you're sitting on camphor 4. So, the purple color that the child has, that one When it disappears, we find out from the firecracker. What was the double bond present in it? In the case of benzene, it does not undergo the reaction. Okay It happens We move forward Don't increase it, child. Both are the same type. This is also bromobenzene, this is also your bromobenzene. So, are you getting any different structures here? Why is this happening? However many H atoms you have They are all in an identical position. The H here, these are exactly in this manner. This is absolutely exactly like this way. Therefore, no other isomers will be found here. So, the second evidence for this is Is there a double bond in it? How was this proven? So I'll tell you how it was proven Come on, let's see the evidence for the double bond. Here Check the evidence for the double bond. when you benzene When you benzene had been freed nickel with reducing agent And when will nickel arrive? Then, in the reaction, the H₂ group will come in. Alright, now what will this H2 do, left? Listen carefully, when this H2 arrives, it will break the bond. If broken, an H will be placed here An H will be placed here. I will use this three times because It will break it again, it will break it again will break, then here you will It will be cyclohexane, right? It will be found, cyclo hexane, okay Why, because look, nickel which It is a type of reducing agent, so you have never If you use it inside the reaction, this will be hydrogen. This will supply, okay, nickel, palladium, platinum, then here a double bond is converted into a single bond, So this hydrogenation here I reacted here. Alright, so this reaction Confirm, this reaction confirmed, there are carbon-carbon double bond is present, because of hydrogenation It's coming, breaking the bond. And substituting is taking place, H will come here, bond will be Will break, will substitute, H will come here, It will break the bond, and here it will be substituted. Alright, so what will we get? cyclohexane, then from the second evidence we have It has been found that regarding our benzine, Child, alternate three There are double bonds; how many double bonds are there? Three double bonds, due to, because of this What do we call a reaction? Yes, catalytic hydrogenation, What do you call this? catalytic hydrogenation Alright, let's do this then. What do you mean by catalytic hydrogenation? These two pieces of evidence have already arrived here. Now growing, next evidence Alright, okay, let's go. Let's move forward to the next topic, where we have even more to explore. You will learn about benzene, and that is the structural formula of benzene. What is the current Kekulé structure of benzene here? What remains of Kekulé? had suggested in 1965 that benzene, which is a cyclic structure It is present and in it, six carbon atoms are present, with alternating single What are double bonds? Look at them something like this, I It was stated that some alternate is in this single. There are single bonds, and in some cases, double bonds are present in it. Six carbons exist, and hydrogen substitution occurs, that's.getPaste The structure of this kind of carbon was known later. Whenever they were above Pechyin It is here and not here, but stop or or So I became I was going to make a bangle That carbon carbon bond in the mod. Has played the game We will lie here, O my beloved, in this campsite. Even if the province is given to us, we are still holding on to it. People call him Col. Sohanka It is mine. One of these kids said, "Hey, what could be the reason? Could it be the structure? Those two ice creams..." What am I doing, getting involved in this weak, ill-tempered dispute? This will be the substitute for the earlier one. If I am to present the summer's current status, what is it? Or is it the same as the one we saw earlier? This is exactly the same, just a little different, a single day's delay, and it's been kept aside for a while. So, could there be two isomers here? Are two isomers possible? No, now what are both of them? Let me tell you. When the experiment occurs, only one ortho-substituted product is present. When the experiment was carried out, it turned out that only one substituted product was obtained. You are not getting two isomers by placing two single bonds and then a double bond. Then later, Kekulé explained Kekulé's theory explains the structure of benzene, proposing that it consists of a ring of six carbon atoms with alternating single and double bonds, which accounts for its stability and unique chemical properties. Kekulé explain White Sepal is fine Because Kekulé did not provide such accurate information In this experiment, you will find the same product in the data. What did Kekulé say? This is a double bond. Where is this double bond protagonists heading? We can see two. But by that time, he will have already arrived there. These two are not it. Both have the same structure. But this was wrong information. Later, as it progressed forward, when it achieved stability Had not expressed When Stability Kekulé cannot tell What do electrons do from your dear PO orbital? So, let's study. Because of which Bon does not break easily Action cannot be taken Just take a quick look at this, that's all Priya has a beautiful face, just like the film "Shakka Chalo," so the star says, "Hista Al Shakt K." Stya Garri, Akha Stya Keha Hind Sciences ka Benjind, iske liye aajarkousha ko sukhne burger, Lauren Because Kekulé couldn't explain this, he did point out that, okay, due to the isolations, we won't get two purdarks, but only one purdark, which is experimental data. There was only one product, but later he also had to explain this Why is this substitution reaction happening so, and why isn't the addition reaction happening so? Why is benzene so stable? Okay, so all these things And to explain all these things further ahead, The topic we are discussing is the child. What is the stability of benzene? Stability of benzene. Now we will study the stability of the benzene ring. How does Upam Bajin stay stable? How does that substitution reaction work? Thinks and why not addition reaction Is it raining? H is replaced, someone takes over. It cannot be avoided. It's too late to avoid it. Pregna benzene, in benzene, the benzene ring is very stable due to its molecular stability, and you have now seen benzene like this. Gya Kule had told him. Take What do we do with this situation? The bonds that are These are the assistants. It is not possible to achieve lasting happiness. What do the bonds do here? If the hybrid stock from Cheezakan is not available Because Nadiqan is Ismailvi Sr Alejandro, the sea is also calm, and the sky is also calm. Oder 07 Carbon Song Man Adbijar 6 Carbon, UHPL It was an electron from the Khaibar region. I will be greatly honored and will accept the award. But benzene is used to stabilize it. What comes after Piaget? What comes after Piaget here after this? If you look at benzene, it looks something like this Adagadgad is the basis of everything. This Sidama Boda Bana. These are the ones I have collected. Until Dageyi, all subterranean constructions were carried out. The electrons of that monster Click here: htps://bit.ly — they are clicking it An addition reaction cannot occur from someone's weight. Look, see how a sigma bond is formed, see the essence of it all All the carbon kids, if I say, this is the soap Sp² hybridized carbon because it has a double bond, okay, this is for H, but and Let me tell you, I just spoke a little, look, you know it The carbon-carbon sigma bond is correct, and the H sp² hybridized carbon is slightly off—look closely, you know it's correct, so two types of sigma bonds are forming; these two bonds have now formed. Next. When the Pae Orbital overlaps with another, just like this one overlapping with that one This one will overlap with this one, this one will overlap with this one So it will become a pie ball So what will you write? when unhybridized unhybridized p-orbitals overlap with others to form to form a pi bond So, the pi-bond became known to everyone Like in the rigorous bat of Maazaa, in such a way, the prastiyas sink into the Ganga. Then, Arf Pahan will conquer the land, riding on the backs of bulls. She performs the malai jahe dance in this. This engine will surely go ahead. What happens when you eat Maggie Maggie with sourness? Why does it go to the throat? We call it overlapping literally overlapping, okay, so that's why They are known to be localists and also known for having six carbon atoms in the aromatic ring. This makes benzene very stable. Look, in this way, if you Your benzene is here. This is the P orbital Just like this, right here The electron It spins around something up there And what else keep doing down there They keep turning around, due to which Next, my dear Bond parameters of These people are Nikaav, normal parameter You don't give them anything, not even a little. Now even Bijin's Kati parameters are gone. What? What is this? What kind of people are these confused carbon-based beings? Yes, what? So he got angry after losing so much on the grid Everyday Bond England Everyday Bond Length 139 picometers, that's correct, but good. A carbon-carbon single bond is about 154 picometers in length. Kai ChariSE... 1999 Bikons Zedra Kai ChariSE... Kai Chari Se Kai Chari Shu 15999 Bikons Zedra 15999 Ged Kol Race to the future Sari Bounded 15 ä 15 milestone This will be 133. 133 picometers But if I were to talk about the same benzene thing, kid Talking about benzene And regarding this bond, it is 39 picometers. Is that all? 139 picometers Average Distance is this For this reason, benzene cannot undergo addition reactions. Because its bond length keeps getting shorter. Alright, these are some bond parameters you need to remember. Because the single-slit diffraction patterns that we have learned about The bond length in benzene is 139, but if I were to talk about a normal chain, The carbon-carbon single bond is 154, and the double bond is 133. Aromatics Character What is an aromatic character? Please listen carefully. Why should I consider benzene as benzene? It doesn't need to follow any of my rules. In the GHS, benzene is our aromatic hydrocarbon. What is the rule for the meter? What is the count for it to be arithmetic? It should be happening, and Benasi should be the one to commit suicide, it should be a plane crash. All the melons are yours, my dear. All the atoms in the rings should be sp2 hybridized. Okay, they should be sp2 hybridized. We will call it aromatic only when all of its atoms are part of the aromatic system. What is the second point? Each atom in the aromatic ring has a p-orbital, and the p-orbitals must be Parallel to that of continuous overlapping and possibly around the ring. Now look. What did I say? If you take benzene, you know about this, right? And these should really connect with each other, right? Only then will it work. I will consider this as aromatic; otherwise, I won't consider it aromatic, okay, one The second one should overlap the first one, okay, and what is the third point? The p-orbital must contain 4n + 2 pi electrons, where n is any integer. I'll explain this to you. I will explain what is being said: if someone follows this rule, if you take n When the value 123, which is an integer number, comes, you will say it as "one twenty-three" in English. I won't say benzene; I'll say aromatic compound. If not, then it's aromatics. Don't say compound. Let's go, these three rules won't be asked of you; you just have to know it. If you should apply, then I'm taking the first example here as an example I'm taking benzene as the first example here, okay? As I've just mentioned. Benzen is a child, yes. If I make all the compounds in this way, you'll see that all of them are The carbon in the child is sp2 hybridized, and all of them—how are sp2 hybridized carbons? They are also plain, and the other ones, all these, the ones with pi and bits, are overlapping each other, so here too, there is an overlap. It has also become overlapping P orbitals because all are SP2 hybridized. SP3 doesn't exist, it's SP2, right? We'll definitely overlap, and the alternating double bond will definitely appear. Third Point, Hakel's Rule The game rule was the same: there should be 4N plus 2 pi electrons. It should be Pi Electron What is this now? I apply it here. Pour a place to is us to Number of Pi electrons We need to find the value of E here. If you send those two to the stomach, how much will it become? What will be the value of Paur Aen today? One Yes, the value of N comes out as an integer. So how will this become? Aromatic compound And we were the beloved of #Dhekriaṃpa This needs to be washed. Home, my dear Everyone has lost something and said so. Why do we love? We have become the fairy tale. He even took this car. I, who had been given two (things) Me, too, am from Ash Zho. If you cut the ash, both sides will look the same, so this planner is also plain. The second vaccine contains the entire spike protein hybridized carbon, so overlapping will also occur. Hybridize carbon, exactly, look at all, all, all, all will be connected with double bonds. What is Pila Pants saying? Yes, this site is also a soap planner. Cut it from here, the same amount will come. Cut it like this, the same amount will come. Exactly, all of them, all the site points, all of them, all of them, all of them are not IBIDIZ. How to code your thavna, your carbon is correct I was thinking of its day of celebration. are How I found out about Carbon Spike It is not that It's not just the carbon footprint of its production. These are the thorns of Mastodia's cactus; what happened to the year, the year has passed, what's left? That your profile and I are there, is there also a glitch? Taxes were imposed, or did it? It failed right there in the second one. The one who does not have a soul is a mere shadow. What is there in the world that is not found in Suraj? Because there is one SP-3. When the cavalry rider's hair was not tied, he became disheveled. If we have already read all this information about physical data of benzene, let's proceed to study the Friedel-Crafts reaction, so that we can understand whether we can carry out the reaction. The first part is preparation of aromatic compounds from industrial sources. The child is in the industrial context. Kol Wire Coal Tar Petroleum Petroleum Phizar are Major Major Source Source preparation Aromatic compound That was the age of this. that if you If asked about industrial methods, you can write about coal tar and petroleum industries. which are very large and major sources for preparing aromatic compounds We proceed further with our MathTad and Preparation on Benzene and Ethyne, Trimerization If you're going to make it, I'll write and tell you how to make it. Look, I have acetylene here. Trimers mean three molecules, trimers refer to three molecules. Cheater It will take us a while to react to this. Dead Hot Iron Tube And the adjacent temperature was very high, so the temperature of the calve would feel extremely hot. Listen carefully to this reaction, Suvo. The moment you perform this reaction, a bond will be formed. The temperature has risen too high; it will become unbearable. It's H, he wrote down the H for it. A bond will be formed right here. Because it's the Electra We will create a mel-hyape. Bond, the carbon bond, was revealed And he just slapped an HB on it. Why did the Modiyar account get frozen? For the sake of the child, je I insist, I want to go, I myself want to go. I am based on the InAdhaar platform. I just got stupid Osia sud. Then, trimethyl, your molecules contain acetylene, red hot, iron tube What will we get here if we react like this? Benzin will be available, right? Let's see the second reaction here. Benzene preparations, brother sodium benzoate We have to perform de-carbonylation, vote This de-carbonyl oxidation, removal of, removal of If you are among any of the reactions If you remove C.O.2, then what do we people call that? They say, D. carbonyl oxidation, okay, sodium Look at the first formula of benzoyl acetone, then this Done, sodium benzoate is an O-ATP ester group, sodium Benzoate ester group, we will take this here Show me if you heat H and C A O calcium oxide and heat. So, what will happen to this H here? It will be substituted. This H, so we will call this compound benzoyl. If I tell you the second method here for making benzoyl, you can write the theory; there is no need to write the theory in this case. And here, H will be substituted, so what will happen here, benzoyl Alright, so this third reaction is what we've seen three reactions back-to-back while making benzoin. In the first reaction, you used acetylene, three molecules, to form benzene by breaking the triple bond, then took sodium benzoid in the second step, so the soda came out, and benzene bond formed, third final reaction I have put in a lot of effort to teach this topic, aromatic chemistry, because there are still many children who haven't grasped it yet—like substitution and addition reactions. Please, if you could It really feels like Mr. Sachin is putting in a lot of effort, these jet practices are yours You're taking too much time, doing too much effort, it's taking too long, you're taking too much time I don't do things like Paki teachers, who teach for the sake of teaching, I don't do that either. If I'm focused on studying, come here and teach the kids, dude, just kidding around, having fun It keeps happening; I make a lot of videos, funny videos, jokes. Video, Taiink YouTube