Question
Chemistry Question on Alcohols, Phenols and Ethers
Which of the following on reaction with NaOI will give yellow precipitates?
(A) Phenylethanone
(B) Sec-Butyl alcohol
(C) Phenylethanal
(D) Methyl n-propylketone
Choose the correct answer from the options given below:
A
A, B, and D only
B
A, B, and C only
C
A, B, C, and D
D
B, C, and D only
Answer
A, B, and C only
Explanation
Solution
Sodium iodide in the presence of iodine (NaOI) reacts with certain carbonyl compounds to give yellow precipitates. Phenylethanone, sec-butyl alcohol (secondary alcohol), and phenylethanal (aldehyde) all react with NaOI to form yellow precipitates. Methyl n-propylketone is less likely to form a yellow precipitate under these conditions.