Q11 / 180 · KCET 2009 · Chemistry
In the electrolysis of acidulated water, it is desired to obtain $1.12$ cc of hydrogen per second under STP condition. The current to be passed is
- A$1.93 \mathrm{~A}$
- Correct answerB$9.65 \mathrm{~A}$
- C$19.3 \mathrm{~A}$
- D$0.965 \mathrm{~A}$
Solution
No. of moles of $\mathrm{H}_{2}=\frac{1.12}{22400}$
No. of equivalence of hydrogen
$$
=\frac{1.12 \times 2}{22400}=10^{-4}
$$
No. of Faradays required $=10^{-4}$
$\therefore$ Current to be passed in one second
$$
\begin{aligned}
&=96500 \times 10^{-4} \\
&=9.65 \mathrm{~A}
\end{aligned}
$$
Hence, the correct answer is option: 'B'.