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Concentration Terms

When the same...

Question

When the same amount of zinc metal is treated separately with excess of $H_{2} S O_{4}$ and excess of $N a O H$ , the ratio of the volumes of $H_{2}$ evolved is :

A

1 : 1

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B

1 : 2

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C

2 : 1

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D

none of the above

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Solution

The correct option is A $1 : 1$
$Z n + H_{2} {S O}_{4} \to {Z n S O}_{4} + H_{2} ↑ Z n + 2 N a O H \to {N a}_{2} {Z n O}_{2} + H_{2} ↑$

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