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  4. Passage of electricity through dil H2SO4 for 1 hour liberates a total of 224ml of H2 at S.T.P. The magnitude of current would be :-

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Q. Passage of electricity through dil $H_{2}SO_{4}$ for $1$ hour liberates a total of $224ml$ of $H_{2}$ at $S.T.P.$ The magnitude of current would be :-

NTA AbhyasNTA Abhyas 2020

Solution:

moles of hydrogen gas $=\frac{224}{22400}=10^{- 2}$
$g_{eq}$ to $H_{2 \left(g\right)}=\text{mole}\times n\text{ factor} \\ =2\times \left(10\right)^{- 2}$
$g_{eq}=\frac{i \times t}{96500}$
$2\times 10^{- 2}=\frac{i \times 3600}{96500}$
$i=0.536\sim eq0.54A$