Question

generally when metals are treated with acids ,hydrogen is liberated but with minerals except magnese and magnesium ,with HNO3, hydrogen gas is not liberated why

Answer 1

The reason is because HNO3 or Nitric Acid is a strong oxidising agent.

When it reacts with a metal it forms water and instead of forming a salt it oxidises and forms a nitrogen compound . And this is the main reason.

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