In which reaction is nitric acid acting as an oxidising agent? A \( \mathrm{Cu}+4 \mathrm{HNO}_{3} \rightarrow \mathrm{Cu}\left(\mathrm{NO}_{3}\right)_{2}+2 \mathrm{H}_{2} \mathrm{O}+2 \mathrm{NO}_{2} \) B \( \mathrm{CuO}+2 \mathrm{HNO}_{3} \rightarrow \mathrm{Cu}\left(\mathrm{NO}_{2}\right)_{2}+\mathrm{H}_{2} \mathrm{O} \) C \( \mathrm{Na}_{2} \mathrm{CO}_{3}+2 \mathrm{HNO}_{3} \rightarrow 2 \mathrm{NaNO}_{5}+\mathrm{H}_{2} \mathrm{O}+\mathrm{CO}_{2} \) D \( \mathrm{NaOH}+\mathrm{HNO}_{3} \rightarrow \mathrm{NaNO}_{3}+\mathrm{H}_{2} \mathrm{O} \)
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An oxidizing agent is a substance that gains electrons in a chemical reaction and, in the process, causes another substance to lose electrons (be oxidized). Show more…
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