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  • Copper reacts with nitrate ions in acidic medium to give  gas. Choose the balanced

Copper reacts with nitrate ions in acidic medium to give \mathrm{NO}_{2} gas. Choose the balanced reaction:

Option: 1

\begin{aligned} & \mathrm{Cu}+\mathrm{NO}_3{ }^{2-}+\mathrm{H}^{+} \rightarrow \mathrm{Cu}^{+}+\mathrm{NO}_2 \\ \end{aligned}


Option: 2

\mathrm{Cu}+\mathrm{NO}_3{ }^{2-}+\mathrm{H}^{+} \rightarrow \mathrm{Cu}^{2+}+\mathrm{NO}_2+\mathrm{H}_2 \mathrm{O} \\


Option: 3

\mathrm{Cu}+\mathrm{NO}_3{ }^{2-}+2 \mathrm{H}^{+} \rightarrow \mathrm{Cu}^{2+}+2 \mathrm{NO}_2+\mathrm{H}_2 \mathrm{O} \\


Option: 4

\mathrm{Cu}+2 \mathrm{NO}_3{ }^{2-}+4 \mathrm{H}^{+} \rightarrow \mathrm{Cu}^{2+}+2 \mathrm{NO}_2+2 \mathrm{H}_2 \mathrm{O}


Answers (1)

best_answer

Unbalanced reaction: \mathrm{Cu}+\mathrm{NO}_3{ }^{2-}+\mathrm{H}^{+} \rightarrow \mathrm{Cu}^{2+}+\mathrm{NO}_2

Balancing the charges and atoms:

\mathrm{Cu}+2 \mathrm{NO}_3{ }^{2-}+4 \mathrm{H}^{+} \rightarrow \mathrm{Cu}^{2+}+2 \mathrm{NO}_2

Ading water to balance the \text{H}^{+} ions :

\mathrm{Cu}+2 \mathrm{NO}_3{ }^{2-}+4 \mathrm{H}^{+} \rightarrow \mathrm{Cu}^{2+}+2 \mathrm{NO}_2+2 \mathrm{H}_2 \mathrm{O}

Posted by

shivangi.shekhar

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