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  • When anclectric current is passed through acidified water, 105 mL of hydrogen gas at N. T.P was collected at the cathode in 725 seconds. The current passed, in ampere is:<div class='qna-option'

When anclectric current is passed through acidified water, 105 mL of hydrogen gas at N. T.P was collected at the cathode in 725 seconds. The current passed, in ampere is:

Option: 1

2.647 


Option: 2

3.874 


Option: 3

1.247 


Option: 4

4.826
 


Answers (1)

best_answer

Cathode
\mathrm{2 e^{-}+2 \mathrm{H}_2 \mathrm{O} \rightarrow \mathrm{H}_2+2 \mathrm{OH}^{-}\left(V.f.)_\mathrm{H_2}=2\right. }
\mathrm{\text { Mole }=\frac{i \times t}{V.f.+\times 96500} }


\mathrm{\frac{105}{22400}=\frac{i \times 725}{2 \times 96500} }


\mathrm{i=1.247}.
 

Posted by

shivangi.bhatnagar

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