Zinc does not evolve hydrogen gas on reacting with nitric acid. why?
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Zinc is a reactive metal which can displace hydrogen from dilute acids. But if dilute nitric acid is used, no hydrogen gas is liberated. ... It can't be displaced from nitric acid. So even though, zinc is a reactive metal, due to the acid, hydrogen is not liberated.
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when zinc reacts with dilute hydrochloric acid and sulphuric acid it liberates hydrogen gas but when it reacts with dilute nitric acid it can't liberate hydrogen gas because it oxidises the hydrogen gas produced to water and itself gets reduced to any of the nitrogen oxides.
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