Give reason why hydrogen gas is not evolved when a metal reacts with nitric acid
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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.
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Nitric acid is a strong oxidising agent..It will oxidise the hydrogen gas formed to water and get itself reduced to any one oxide of nitrogen.so hydrogen gas is not evolved....but there is an exception for metals like manganese and magnesium..
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