Question Detail

CHM 102 Practice Questions Objective Question
Take CBT

Question

An unknown compound gave a positive Tollens' test. Treatment of the unknown with I2/NaOH gave a solid which was identified as iodoform. The unknown was?
Options
A Ethanal
Correct Answer
B Acetone
C Propanal
D Acetophenone
Correct Answer

Option A is the correct answer.

Detailed Explanation

The compound gave a positive Tollens' test (aldehyde) and positive iodoform test (CH3CO- group). Ethanal (acetaldehyde, CH3CHO) is an aldehyde with the CH3CO- group (after oxidation) and gives both tests. Acetone gives iodoform but not Tollens'. Propanal gives Tollens' but not iodoform.

Hint

Which aldehyde has the CH3CO- group?

Question Info

Course: CHM 102
Topic: Practice Questions
Type: Objective
Difficulty: Not specified
Question 1388 of 1999
Previous Course Details Next