Question

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)

Answer 1

$AgNO _{3}+ NaOH \rightarrow AgOH + NaNO _{3}$

$2 AgOH \rightarrow Ag _{2} O + H _{2} O$

$Ag _{2} O +4 NH _{3}+ H _{2} O \rightarrow 2 Ag \left( NH _{3}\right)_{2}^{+}+2 \overset{\ominus}{O}H$



Total $2e^{-}$ transfer to Tollen's reagent