Question Detail

CHM 102 Carbonyl Compounds Objective Question
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Question

What is the product when an aldehyde reacts with Fehling's solution?
Options
A Silver mirror
B Red/brown precipitate of Cu₂O and carboxylic acid
Correct Answer
C Yellow precipitate of iodoform
D No reaction
Correct Answer

Option B is the correct answer.

Detailed Explanation

Fehling's solution (Cu²⁺ complex) is reduced by aldehydes to red/brown copper(I) oxide (Cu₂O) precipitate; the aldehyde is oxidized to the carboxylic acid salt.

Hint

Copper(I) oxide is red/brown.

Question Info

Course: CHM 102
Topic: Carbonyl Compounds
Type: Objective
Difficulty: Not specified
Question 666 of 1999
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