The quantity of electricity required to liberate $112 c c$ hydrogen at S.T.P from acidified water is_________.

965 C

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9650 C

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96500 C

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4825 C

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Solution

The correct option is A $965 C$
$2 H^{+}$ + $2 e^{-}$ $\to$ $H_{2}$

2 F is required to liberate 22.4 L of $H_{2}$ gas;

$1000 c c$ = 1L

112 $c c$ = 0.112 L

for 22.4 L we require 193000 C of charge, ( 1F = 96500 C )

so, 0.112 L we require charge = $\frac{193000 * 0.112}{22.4}$

Hence, the quantity of charge required = 965 $C$

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The quantity of electricity required to liberate 112 cc hydrogen at S.T.P from acidified water is_________.

The correct option is A 965 C2H+ + 2e− → H22 F is required to liberate 22.4 L of H2 gas;1000cc = 1L112 cc = 0.112 Lfor 22.4 L we require 193000 C of charge, ( 1F = 96500 C )so, 0.112 L we require charge = 193000∗0.11222.4Hence, the quantity of charge required = 965C

The quantity of electricity required to liberate $112 c c$ hydrogen at S.T.P from acidified water is_________.