When same amount of zinc is treated separately with excess of...

When same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide solution, the ratio of volumes of hydrogen evolved is:

Options

A1: 1
B1: 2
C2: 1
D9: 4

Correct answer

A. 1: 1

Step-by-step solution

\mathrm{Zn}+\mathrm{H}_{2} \mathrm{SO}_{4} \rightarrow \mathrm{ZnSO}_{4}+\mathrm{H}_{2}\mathrm{Zn}+2 \mathrm{NaOH} \rightarrow \mathrm{Na}_{2} \mathrm{ZnO}_{2}+\mathrm{H}_{2}\therefore

Ratio of volumes of

\mathrm{H}_{2}

evolved is 1: 1

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