when zinc reacts with hydrochloric acid, a gas librates. This gas burns with 'pop' sound.
(a) Identify the gas and types of reaction involved.
(b) Write a balanced chemical equation for the reaction.

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Solution

(i) We know that hydrogen gas is the gas which burns with a pop sound. Thus the gas liberated wen zinc reacts with hydrochloric acid is hydrogen, and the reaction is a displacement reaction in which zinc displaces hydrogen from the acid.
(ii) A balanced chemical equation for the reaction is as follows
Zn (s) + 2HCl (aq) â†’ ZnCl₂ (aq) + H₂ (g)

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when zinc reacts with hydrochloric acid, a gas librates. This gas burns with 'pop' sound.(a) Identify the gas and types of reaction involved.(b) Write a balanced chemical equation for the reaction.

when zinc reacts with hydrochloric acid, a gas librates. This gas burns with 'pop' sound.
(a) Identify the gas and types of reaction involved.
(b) Write a balanced chemical equation for the reaction.