When zinc metal is treated with a dilute solution of a strong acid such as $H_{2} S O_{4}$ , salt (Y) is formed along with a gas (Y), which burns with a pop sound. Identify X and Y.

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Solution

Zinc on reaction with dilute sulphuric acid undergoes displacement reaction to give zinc sulphate and hydrogen gas. [0.5 Mark]

The reaction involved is:

$Z n (s) + H_{2} S O_{4} (a q) \to Z n S O_{4} (s) + H_{2} (g)$ [0.5 Mark]

Therefore, (X) is zinc sulphate and (Y) is hydrogen gas. [1 Mark]

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When zinc metal is treated with a dilute solution of a strong acid such as H2SO4, salt (Y) is formed along with a gas (Y), which burns with a pop sound. Identify X and Y.

Zinc on reaction with dilute sulphuric acid undergoes displacement reaction to give zinc sulphate and hydrogen gas. [0.5 Mark] The reaction involved is: Zn(s)+H2SO4(aq)→ZnSO4(s)+H2(g) [0.5 Mark] Therefore, (X) is zinc sulphate and (Y) is hydrogen gas. [1 Mark]

When zinc metal is treated with a dilute solution of a strong acid such as $H_{2} S O_{4}$ , salt (Y) is formed along with a gas (Y), which burns with a pop sound. Identify X and Y.

Zinc on reaction with dilute sulphuric acid undergoes displacement reaction to give zinc sulphate and hydrogen gas. [0.5 Mark]

The reaction involved is:

$Z n (s) + H_{2} S O_{4} (a q) \to Z n S O_{4} (s) + H_{2} (g)$ [0.5 Mark]

Therefore, (X) is zinc sulphate and (Y) is hydrogen gas. [1 Mark]