Question Detail

CHM 102 Qualitative and Quantitative Analysis in Organic Chemistry Objective Question

Question

What is Baeyer's test (cold KMnO₄) used for?
Options
A Detecting alkenes and alkynes (unsaturation)
Correct Answer
B Detecting alcohols
C Detecting carboxylic acids
D Detecting amines
Correct Answer

Option A is the correct answer.

Detailed Explanation

Cold, dilute KMnO₄ (purple) is decolorized and gives a brown MnO₂ precipitate when added to alkenes or alkynes, indicating unsaturation.

Hint

Purple to brown.

Question Info