Ncleophilic addition reactions are catalysed__________________?
Correct answer: C. Both A and B
- A. Acid
- B. Base
- C. Both A and B
- D. None
Explanation
Nucleophilic addition can be acid-catalysed by protonating the carbonyl oxygen, which makes the carbonyl carbon more electrophilic, or base-catalysed by generating a stronger nucleophile. The likely mistake is choosing only acid or only base because a student may remember one mechanism and overlook the other.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Nucleophilic Addition Reactions
Nucleophilic addition occurs at the polar carbonyl group of aldehydes and ketones, where a nucleophile attacks the electron-deficient carbon atom. Reactions with hydrogen cyanide, sodium bisulfite, alcohols and Grignard reagents are explained through tetrahedral intermediates, acid or base catalysis, and the different reactivity of aldehydes and ketones.
Practise Aldehydes and Ketones
679 free Aldehydes and Ketones MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Nucleophilic Addition Reactions questions
Acetone reacts with HCN to form a cyanohydrin. It is an example of________________?
Which of the following reagents will react with both aldehydes and ketones ?
Acetaldehyele cyanohydrin on acid hydrolysis yields___________________?
What type of chemical reaction is this?CH3CHO + NH3 -> CH3CH(OH)NH2
Which of the following aldehydes will be most reactive towards nucleophiles?
Identify the correct (increasing) order of reactivity of carbonyl compound towards nucleophilic addition: