why do metals do not liberate h²gas with hno³ acid? which metals are exceptions and why?
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(a) Metals do not liberate hydrogen gas with nitric acid because nitric acid is string oxidizing agent so, as soon as hydrogen gas is formed in the reaction between a metal and dilute nitric acid, the nitric acid oxidise this hydrogen to water.
(b) Magnesium and Manganese are the two metals which liberate hydrogen gas from very dilute nitric acid.
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Answer:
(a) Metals do not liberate hydrogen gas with nitric acid because nitric acid is string oxidizing agent so, as soon as hydrogen gas is formed in the reaction between a metal and dilute nitric acid, the nitric acid oxidise this hydrogen to water.
(b) Magnesium and Manganese are the two metals which liberate hydrogen gas from very dilute nitric acid.
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