In the reaction of gold with aqua regia,the o | vedclass

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Question

(A) The reaction of gold with aqua regia is given by the equation: $Au + 4H^{+} + NO_{3}^{-} (+5) + 4Cl^{-} \rightarrow AuCl_{4}^{-} + NO (+2) + 2H_{2

Vedclass · Accepted Answer

$+5$ to $+2$

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(A) The reaction of gold with aqua regia is given by the equation: $Au + 4H^{+} + NO_{3}^{-} (+5) + 4Cl^{-} \rightarrow AuCl_{4}^{-} + NO (+2) + 2H_{2}O$ In this reaction,the nitrogen atom in the nitrate ion $(NO_{3}^{-})$ has an oxidation state of $+5$. It is reduced to nitric oxide $(NO)$,where the oxidation state of nitrogen is $+2$. Therefore,the oxidation state of nitrogen changes from $+5$ to $+2$.

In the reaction of gold with aqua regia,the oxidation state of Nitrogen changes from

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