Question

which gas is liberate when metal is treated with acids?​

Answer 1

Answer:

hydrogen gas is released

Answer 2

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Hydrogen gas

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Hydrogen gas is liberated when an acid reacts with a metal. For example, when zinc metal reacts with dil. hydrogen is evolved and salt zinc chloride is formed as: It can be tested by bringing a burning candle near the gas. The candle continues burning with a pop sound.