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"Aldehydes Ketones and Carboxylic Acids: Videos"

00:00:00 [Music] [Applause] [Music] Welcome to IIT program. Today we will discuss class 12 unit 12 alihads, ketones and caroxilic acids. And alihides, ketones and caroxilic acids are called carbonial compounds. And they have common functional group which is called carbonate. And they can be represented by the groups attached like R and Rdash and depending on the properties and the structure of R and Rash they are called different derivatives. So first we will learn about alihides. In alihides R and or


00:01:22 Rdash is equal to hydrogen. So one of them must be hydrogen. And in ketones R and Rust must be alken or a groups. In caroxilic acid, the Rd dash should be O and in caroxilic acid. And in caroxilic acid a star there will be a r dash or r double dash group. In caroxilic acid helides R dash will be chlorine, bromine, iodine etc. Acid anhydrates are represented by this structure where R and can be same or different and they are called caroxilic acid anhydride. here Rdash when it is NH2 then it's


00:04:56 called primary amide when it is NH R dash then it's called secondary amide and when it is in plus two then it's called tarscerium amide. So now we know the structures of the caroxilic acid derivatives and our first uh discussion will be on alihides and ketones. So some alihides and ketones are important and they are fragrant molecules like vanoline, salicyaldihide and cinnamaldihide. They are important molecules. So the structures are so vaneline. And this is alphabet unsaturated ali which is called cinamaldi.


00:07:27 So we'll first discuss ali's common names and generally of caroxyic acid by ali. like acidic acid to acetate. And the positions of the substituents presented by Latin terms alpha, beta, gamma, delta, etc. And let's discuss some examples. Now this is acetic acid and its corresponding alihide is this is acet alihide. Similarly, this is benzoic acid. And the corresponding alihide is called benzaldihide. Now let's discuss an example where we can give the numbering alpha, beta, gamma etc.


00:10:46 So this is the alihide carbon and this will be alpha carbon. This will be beta and this will be gamma. So this common name will be gamma bromo butile dehide. Similarly, this will be beta methile. propanal dehide because this is in the beta position. The methile group is in the beta position. So you have to first write the substitutant like beta methile and then the parent chain propanalihide. Now we'll discuss common name of ketones. Here initially by prefixing you have to give the alkal or a groups gen alkal groups


00:12:50 attached to the carbonial groups. So this is this called dimethile ketone. So these two methile groups will come first and then the term just ketone will come. Similarly, this can be called ethile methile ketone. this called cyclopropile. This is the cyclopropile group. So cyclopropile first first comes because of C and then methile comes. So cyclopropyl methile ketone for aromatic ketones like this one. This term is called genic phenon. And this will be the corresponding asyl group. So first prefix will be the


00:15:31 corresponding asyl group and then you have to add phenon. So this compound will be named as acettophenon. Similarly, this compound will be called as because this is propon now so it will be called as propenon. Let's discuss some more example. So this group is called benjo. So what will be its name? His name will be Benj Penon clear. Now we'll go to the upupac names. First we'll discuss open chain aliides. And the rule is that Then And the numbering will start from the ali group. And then the substituents


00:19:45 substituents will be numbered. So here this 1 2 3 numbering will come no alpha beta gamma and this will be in prefix. So corresponding alken name before that you have to add these substitutions. So let's discuss some examples. So the simplest one is this is called ethanol. And of course this is the uh simplest. This is called methanol. So E is replaced by L. Then substitutions As I told that the alihide group will always get the first numbering. So this will be 1 2 3 4 and depending on the alphabetical order.


00:22:34 So here bomo comes first. So you have to write first four bomo. So this is true material. So this is the parent chain is the butel. So you have to write at last and then pass the substrance. Let's discuss some more examples. When another carbonal group is present in the chain along with the alihide then it's called oxo. So here the numbering will be 1 2 3 4 5. So what will be the impact name of this? It will be four oxo. This is five chain five carbon chain. So it will be pental four oxo pentanel.


00:24:33 Here since there are three LH group so we have to give numbering and we cannot give priority to any alihide group and this compound is called 1 2 3. Our first propane type carbal dehight. So this carbaldihide corresponds to the CH group. This we will see in the cyclic compound that this carbalide is very important. So let's discuss some um cyclic compounds. And the numbering will start from So where the CH group attach that carbon atom in the ring we'll get number one. Let's discuss some example.


00:28:25 this called. So this is the parent chain. What is the parent chain here? Cycllohexen. So the compound's upang name will be cylo hexen carbaldihide. What will be the name of this compound? Here there are substrates. So you have to arrange the substance in the alphabetical order. So poor bombo 3 methile cycllohexen carbaldihide. Let's discuss some aromatic examples. Aromatic cyclic compounds. What is the ring here? This ring is benjene. So according to our rule it will be called as benzene carbaldihide


00:30:32 but the common name benzelihide is very popular and it has been also accepted as upg Amen. Here also the numbering will start from the carbon atom where the ali group is attached. So what will be its name? Three methile, four nitro benzaldi. Let's discuss now impact name of ketones and first open chain ketones. So you have to find the longest chain containing the carbonial group. And here since the ketone the carbonial group in between the chain. So you have to give the minimum number to the carbonial


00:33:44 group. And also you have to indicate the position. You have to indicate This is different from alihide because alihide the position is not important because it is always in the number one but ketone you have to give the indicate the position by giving a numbers. First discuss some examples. So this is the longest sin. This is the parent chain. And now the minimum number of the carbonal will come from this side. So you can call it two two non Yeah, this is important that alken e replace by on. So this is the pentan ring. So pentanon


00:35:59 and you have to indicate the position of the carbonial that you can give two edge either right before the name. So like two pentanon or penton then two on here the numbering will start such as always you have to give the minimum number depending on but independent of the other substance. So here the minimum numbering will come from this side. And when the substance are present you have to choose this way like this because you have to give already this numbering. So four bomo three hydroxy buton 2 on


00:37:41 let's discuss some more example So here numbering we will start from the carbonal because this is phenile. So we cannot give number to the phenile here. So we have to start from the carbonil. So the name will be three phenile propan one. Sorry this is one phenile. Sorry this is one. So one phenile one phenile propan one. Now discuss some cyclic ketones. So here also e is replaced by on and you have to write the parent cylo alkan name and then you have to add the uh suffix o n and The numbering.


00:41:01 So numbering will start from the carbonal group in the ring. So carbonal group will get number one. Let's discuss some example. So this is the carbonal compound cyclic carbon here it will get the one and 2 3 4 5. So what will be it up name? And here interestingly since carbonil is getting one so you may omit the position of the carbonial group here. So this compound can be called directly as threemethile cyclopentanon. This compound can be called as four hydroxy four hydroxy cycllohexan. So cycle is


00:42:47 the parent ring here and then we have to add the on. When two carbon groups are present like this then they are called dion. and numbering will start one of the carbonial group. So the upupac name will be here again the position will come that what is the relation whether they are 1 3 or 1 4. So then the name will be two methile cycllohex 13 di. Sorry this will be cycllohexon hexon 13 diode. Let's discuss another one. This will be again two methiles. Cyclic sun cycle of two methile cycllohexan one for


00:45:10 dion. What will be this name? Two methile X1. Now we have to give the position of the carbonil 135 trione. So let's conclude here the nomenclature

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VIDEO LECTURES FOR ALDEHYDES KETONES AND CARBOXYLIC ACIDS (Class 12)

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Video Lectures For Aldehydes Ketones and Carboxylic Acids for NEET Exam

Overview

NEET Class 12 Chemistry NCERT Chapter 08 Aldehydes, Ketones and Carboxylic Acids.

In this video, we will cover:

1. Structure of Carbonyl Group

2. IUPAC

3. Preparation of Aldehydes ( From Grignard reagent )

4. Preparation of Aldehydes ( From Stephen reduction )

5. Preparation of Aldehydes (From Alkenes )

6. Preparation of Aldehydes (Rosenmund’s reaction )

7. Preparation of Aldehydes (Aromatic Aldehydes )

8. Preparation of Aldehydes (Gattermann-KOCH synthesis )

9. Preparation of Aldehydes (Gattermann Aldehyde Synthesis )

10. Nucleophilic Addition Reaction (Additon of HCN )

11. Nucleophilic Addition Reaction (Addition of NaHSO3)

12. Nucleophilic Addition Reaction (Addition of Alcohols )

13. Nucleophilic Addition Reaction (Addition of Grignard Reagent )

14. Reaction with Ammonia Derivative

15. NEET Chemistry Aldehydes, Ketones and Carboxylic Acids

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Chapter 08 Aldehydes, Ketones and Carboxylic Acids Class 12 NEET Chemistry deals with:

Aldehydes and ketones

They are functional isomers of each other and collectively called as carbonyl compounds (C=O).

Chemical properties of aldehydes and ketones

 Structure of Carbonyl group

 If we look at structure ,multiple bonds are seen. Therefore ,they will show addition reactions .

  •   Oxygen being electronegative,attract electrons .
  •     As a result, partial negative charge is acquired on oxygen and partial postive on carbon .
  •     Therefore ,nucleophilic attack occur on carbon .So, in them common reactions that is seen is nucleophilic reactions.
  •     The electronegativity is same but due to approach of attacking agent temporary transfer of electrons occur .

Types of reactions

  •     Nucleophilic addition reactions
  •     Nucleophilic addition reactions followed by loss of water molecule
  •     Oxidation reactions
  •     Reduction reactions
  •     Miscellaneous reactions
  •     Nucleophilic addition reaction

Relative strength of Aldehydes and ketones

On the basis of Inductive effect

  • If the magnitude of positive charge is more on carbon atom ,then more readily it shows nucleophilic addition reaction .So, out of all members HCHO shows this reaction more readily as it has no alkyl group( electron releasing group) present.
  • So, if we compare formaldehyde, ethanol and propanone, the order of their strength towards nucleophilic addition is:
  • It can also be explained on the basis of Steric effect
  • More the bulky groups attached, less space will be available for nucleophile to attack. Therefore, reactivity will be less. So, this can also be the reason to explain the trend.
  • If we compare Benzaldehyde with any other aldehyde, its strength towards nucleophilic addition is less. The reason is due to delocalisation of electron that takes place. Therefore, the charge is not so intensified.
  • Let’s show some nucleophilic addition reactions:
  • Addition of HCN (Cyanohydrins are formed)
  • If only HCN is used, the reaction is slow. So, the base is used that help in removing hydrogen ion from HCN and sets the nucleophile free. As a result, reaction becomes fast. The base reacts as shown below:
  • If we carry out hydrolysis of the above compound, 2-methyl 2-hydroxy propionitrile, then the lactic acid is produced due to hydrolysis of CN group.
  • If we heat lactic acid, in presence of sulphuric acid then the water molecule gets removed and acrylic acid is formed as shown:
  • Addition of Sodium bisulphite (this reaction is used in separation of aldehyde and ketone)
  • For aldehyde, the reaction goes in forward reaction and for ketone backside is favoured (as two methyl groups increase bulkiness and form unstable products). Note: diethyl ketone, acetophenone and Benzophenone will not undergo these reactions because of bulkiness.

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  3. - Identifying Knowledge Gaps: Revision allows students to identify any gaps in their understanding or areas where they need further clarification. This gives you a chance to seek help or delve deeper into those topics. For detailed understanding, you can always refer to the videos of Aldehydes Ketones and Carboxylic Acids Class 12 Chemistry NCERT Chapter 8 on neetbharath.in
  4. - Building Confidence: As you revise Aldehydes Ketones and Carboxylic Acids Class 12 Chemistry and become more familiar with the content, your confidence in your abilities grows. Confidence is a crucial factor in exam performance as it reduces anxiety and allows you to approach exams with a positive mindset.
  5. - Different Revision Techniques: Use a variety of revision techniques such as summarizing notes, creating flashcards, practicing past papers, discussing concepts with peers, and teaching others. Different techniques work for different students, and it's essential to find what suits you the best. You can also attend the LIVE Revision classes on neetbharath.in or watch the LIVE Revision Race videos of Neet Bharath Tutorials on Aldehydes Ketones and Carboxylic Acids Class 12 Chemistry NCERT Chapter 8.
  6. - Spacing Effect: Spacing out revision sessions over time, rather than cramming all at once, has been shown to improve long-term retention. Create a revision schedule leading up to the exams to allow for spaced practice.
  7. - Regular Revision over Cramming: Regular and consistent revision throughout the academic year is very important. Waiting until the last moment to cram everything can be overwhelming and less effective than spaced-out revision.
  8. - Self-Assessment: Assess your understanding periodically through quizzes or self-tests. This helps you to gauge your progress and identify areas that need further attention. Refer Class 12 Aldehydes Ketones and Carboxylic Acids Online Tests.
  9. - Balanced Approach: Remind students to strike a balance between revision and other activities. Adequate rest, exercise, and relaxation are essential for optimal learning and performance.
  10. - Seeking Help: If you face difficulties during the revision process, Refer the videos of Class 12 Chemistry Aldehydes Ketones and Carboxylic Acids. Clearing doubts promptly is crucial for a better grasp of the subject matter. You can always ask your doubts on Aldehydes Ketones and Carboxylic Acids Class 12 Chemistry NCERT Chapter 8. “Ask a Question” section of neetbharath.in

By highlighting the benefits and strategies of effective revision, you can approach your studies more mindfully and achieve better results in your exams. Best of luck bachhon!

Class 12 Chemistry seems to be a quite difficult subject for a lot of students. But, if you get a very good conceptual understanding of the subject, it can be very interesting for you.

We, at Neet Bharath Tutorials, will give our best to make Class 12 Chemistry Aldehydes Ketones and Carboxylic Acids NCERT Chapter 8 super-duper easy for you.

We aim at making learning fun as well as engaging for you with our complete end-end learning content with Aldehydes Ketones and Carboxylic Acids Class 12 Chemistry Best videos, Notes, NCERT pdf, NCERT complete syllabus, tests and Practice Questions.

Always remember, it is very important to study with full concentration during Revision. Here are a few tips for you on how to revise with full focus:

  1. - Create a Distraction-Free Environment: Find a quiet and comfortable place to study where you can minimize distractions. Turn off or silence your phone, log out of social media accounts, and inform others around you that you need uninterrupted study time. A dedicated study environment will help you focus better.
  2. - Set Specific Goals: Before starting your study session, set clear and achievable goals. Break down your study material into smaller tasks, and plan what you want to accomplish during each session. Having specific goals will give you a sense of direction and purpose, making it easier to concentrate.
  3. - Use the Pomodoro Technique: The Pomodoro Technique is a time management method that involves studying in short, focused intervals, typically 25 minutes, followed by a short break of 5 minutes. After completing four sessions, take a longer break of around 15-30 minutes. This technique can improve focus and productivity by providing regular breaks to recharge.
  4. - Stay Organized: Keep your study materials, notes, and resources well-organized. Having everything you need at hand will save time and reduce distractions caused by searching for materials. Use color-coded folders or digital tools to maintain a structured study system.
  5. - Practice Mindfulness and Meditation: Before you begin studying, take a few minutes to practice mindfulness or meditation. Deep breathing exercises and clearing your mind of distractions can help you approach your study session with a calm and focused mindset.

- Remember, studying with full concentration is a skill that takes time and practice to develop. If you find your mind wandering during study sessions, gently bring your focus back to the task at hand and be patient with yourself. With consistent effort, you can improve your ability to concentrate and make the most of your study time.

Last but not the least, To get the best hold on Class 12 Chemistry Aldehydes Ketones and Carboxylic Acids Book Chapter 8. Do not forget to check out:

  • - Aldehydes Ketones and Carboxylic Acids Class 12 Chemistry Best videos
  • - Aldehydes Ketones and Carboxylic Acids Class 12 Chemistry NCERT Solutions
  • - Class 12 Chemistry Aldehydes Ketones and Carboxylic Acids Revision notes
  • - Aldehydes Ketones and Carboxylic Acids Class 12 Chemistry DPPS, Download PDF of solutions
  • - Class 12 Chemistry Aldehydes Ketones and Carboxylic Acids Online Tests
  • - Class 12 Chemistry Sample papers


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