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Illustrate how copper metal can give dif...

Illustrate how copper metal can give different products on reaction with `HNO_3`.

Text Solution

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On heating with dil. `HNO_(3)`, copper gives copper nitride and nitrate oxide.
`3Cu + 8HNO_(3)(dil) overset(Heat)rarr 3Cu(NO_(3))_(2) + 4H_(2)O` + 2NO
With concentrated `HNO(3)`, instead of NO, `NO_(2)` is evolved.
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