What is the resulting gas that is formed when zinc reacts with diluted hydrochloric acid?

Hydrogen

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Sulphur dioxide

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Chlorine

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Ammonia

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Solution

The correct option is A Hydrogen
When zinc reacts with diluted hydrochloric acid, zinc chloride is formed and hydrogen gas is released. The equation for the reaction is given below.
$Z n + 2 H C l \to Z n C l_{2} + H_{2} ↑$
Hence, the gas released in this reaction is hydrogen gas.
Note: Zinc can react with concentrated hydrochloric acid as well but the reaction is highly exothermic that is a large amount of heat is produced in the reaction. Therefore for safety purposes dilute hydrochloric acid is used.

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