Q27 / 150 · MHT CET 2021 (21 Sep Shift 1) · Chemistry
What is the number of electrons passed through an electrolyte solution when 1 ampere current is passed for 16.1 minutes?
- A$5.022 \times 10^{24}$
- B$3.011 \times 10^{22}$
- Correct answerC$6.022 \times 10^{21}$
- D$2.022 \times 10^{23}$
Solution
$$
\begin{aligned}
& \mathrm{q}=\mathrm{ne} \\
& \mathrm{q}=\mathrm{I} . \mathrm{t} \\
& \mathrm{n}=\text { no. of electrons } \\
& \mathrm{e}=\text { change of one electron } \\
& \mathrm{I}=\text { Current supplied } \\
& \mathrm{t}=\text { time in seconds } \\
& \mathrm{q}=1 \times 16.1 \times 60=\mathrm{ne} \\
& \mathrm{n}=\frac{16.1 \times 60}{1.602 \times 10^{-19}}=6.022 \times 10^{21}
\end{aligned}
$$
Hence, the correct answer is option: 'C'.