JEE Mains · Chemistry · STD 12 -8.1. Aldehydes and ketones
In Tollen's test for aldehyde, the overall number of electron(s) transferred to the Tollen's reagent formula \(\left[ Ag \left( NH _{3}\right)_{2}\right]^{+}\) per aldehyde group to form silver mirror is \(......\). (Round off to the Nearest integer)
- A \(1\)
- B \(2\)
- C \(4\)
- D \(6\)
Answer & Solution
Correct Answer
(B) \(2\)
Step-by-step Solution
Detailed explanation
\(AgNO _{3}+ NaOH \rightarrow AgOH + NaNO _{3}\) \(2 AgOH \rightarrow Ag _{2} O + H _{2} O\) \(Ag _{2} O +4 NH _{3}+ H _{2} O \rightarrow 2 Ag \left( NH _{3}\right)_{2}^{+}+2 O H\) \([Image]\) Total \(2 e ^{-}\) transfer to Tollen's reagent.
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