Generally, when metals are treated with mineral acids, hydrogen gas is liberated but when metals (except Mn and Mg), treated with HNO3, hydrogen is not liberated. Why?

Metals and Non-metals

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05/11/2020 6:05 pm

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romiroy12

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Generally, when metals are treated with mineral acids, hydrogen gas is liberated but when metals (except Mn and Mg), treated with HNO₃, hydrogen is not liberated. Why?

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05/11/2020 6:06 pm

Anonymous

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It is because HNO₃is an oxidising agent and it gets reduced to NO if it is dilute and NO₂if HNO₃ is concentrated, it oxidises H₂ to H₂O.

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Generally, when metals are treated with mineral acids, hydrogen gas is liberated but when metals (except Mn and Mg), treated with HNO3, hydrogen is not liberated. Why?

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