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CBSE Class 12 Chemistry 2022 Term 1 Paper

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Question : 21 of 55
Marks: +1, -0
Cu reacts with dilute HNO3\mathrm{HNO}_3 to evolve which gas?
Solution:  
3Cu(s)+2HNO3(aq)→3Cu(NO3)2(aq)3\mathrm{Cu}(\mathrm{s})+2\mathrm{HNO}_3(\mathrm{aq})\rightarrow3\mathrm{Cu}(\mathrm{NO}_3)_2(\mathrm{aq}) +2NO(g)+H2O(l)+2\mathrm{NO}(\mathrm{g})+\mathrm{H}_2\mathrm{O}(\mathrm{l})
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