Question Detail

CHM 102 Synthesis and Reactions of Alcohols & Phenols | General Organic Chemistry Objective Question

Question

What is the color change observed when a secondary alcohol is oxidized by Na2Cr2O7/H2SO4?
Options
A greenish-blue to orange
B orange to greenish-blue
Correct Answer
C colorless to purple
D purple to colorless
Correct Answer

Option B is the correct answer.

Detailed Explanation

Dichromate (orange, Cr+6) is reduced to Cr+3 (greenish-blue) as the alcohol is oxidized.

Hint

Oxidation of alcohol reduces the chromium.

Question Info