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Question
The number of electrons delivered at the cathode during electrolysis by a current of 1A in 60 seconds is ____________.
(charge of electron = 1.6 × 10−19 C)
Options
6.22 × 1023
6.022 × 1020
3.75 × 1020
7.48 × 1023
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Solution
The number of electrons delivered at the cathode during electrolysis by a current of 1A in 60 seconds is 3.75 × 1020.
Explanation:
Q = It
= 1A × 60S
96500 C charge ≡ 6.022 × 1023 electrons
60 C charge ≡ `(6.022 xx 10^23)/96500 xx 60`
= 3.744 × 1020 electrons
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