Question

The reaction of acetaldehyde with Tollens' reagent gives :

• A. silver mirror
• B. acetic acid
• C. both A and B
• D. red ppt of $C{u}_{2}O$

Answer 1

The correct option is C both A and B

Tollens' reagent is silver ammonia complex. It oxidizes acetaldehyde to acetic acid. Silver ions are reduced to silver metal. This gives silver mirror.

$C{H}_{3}CHO+\left[Ag\right(N{H}_3{)}_2{]}^{+}\to C{H}_{3}CO{O}^{-}+Ag$