Acetone reacts with HCN to form a cyanohydrin. It is an example of
Correct answer: C. nucleophilic addition
- A. electrophillic addition
- B. electrophilic substitution
- C. nucleophilic addition
- D. nucleophilic substitution
Explanation
In this reaction, the cyanide ion (CN-) acts as a nucleophile. This means it is electron-rich and seeks to attack an electron-deficient center.The carbonyl carbon of acetone, due to its partial positive charge, acts as the electrophilic center. The double bond between carbon and oxygen polarizes, creating a slightly positive carbon susceptible to nucleophilic attack.The cyanide ion attacks the carbonyl carbon in a nucleophilic addition reaction, forming a cyanohydrin molecule.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Aldehydes and Ketones
Aldehydes and ketones contain the polar carbonyl group, but aldehydes are generally more readily oxidised and more reactive than ketones. Coverage includes preparation by oxidation or reduction routes, nucleophilic addition of reagents such as hydrogen cyanide and bisulfite, and tests that distinguish aldehydes from 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 Aldehydes and Ketones questions
The carbon atom of carbonyl group is:
Which of the following reaction is not shown by ketones?
Which of the following will have the highest boiling point?
Cannizzaro's reaction is not given by
Ketones are comparatively less reactive than aldehdye. It is due to
Ethanal is prepared industrially by air oxidation of ethylene using palladium chloride as catalyst and _ as promoter?