Question

which gas is usually liberated when an acid reacts with metal? Illustrated with an example. How will you test the presence of this gas (4marks)​

Answer 1

Answer:

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Answer 2

Answer:

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Explanation:

Hydrogen gas

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.