Metals are not form hydrogen gas on reacting with nitric acid why?
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Answered by
7
Nitric acid(HNO3) is a strong oxidising agent.
The Hydrogen gas produced during its reaction with metal gets oxidised to H2O, hence no hydrogen gas is produced.
Instead it evolves nitric oxides such as NO2,NO etc.
For Eg:
Cu(s) + 4HNO3(aq)--->Cu(NO3)2(aq) + 2NO2(g) + 2H2O(l)
The Hydrogen gas produced during its reaction with metal gets oxidised to H2O, hence no hydrogen gas is produced.
Instead it evolves nitric oxides such as NO2,NO etc.
For Eg:
Cu(s) + 4HNO3(aq)--->Cu(NO3)2(aq) + 2NO2(g) + 2H2O(l)
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Answered by
2
Nitric Acid (HNO3) is not used in the preparation of hydrogen since being a strong oxidizing agent, it would oxidise the hydrogen formed to water.
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