Question

In the reaction of copper with nitric acid,

• A. $Cu$ is oxidised to $Cu ^{2+}$ ion by hydrogen ion
• B. $Cu$ is oxidised to $Cu ^{2+}$ ion by nitrate ion
• C. $Cu$ is reduced by hydrogen ion
• D. Both(b) and (c)

Answer 1

Answer: (B)

In the reaction of $Cu$ with $HNO _{3}$, it is nitrate ion not the hydrogen ion, which oxidises $Cu$.