Question

The number of electrons delivered at the cathode during electrolysis by a current of 1 ampere in 60 seconds is (charge on electron = $1.60\times {10}^{-19}C$):

• A. $3.75\times {10}^{20}$
• B. $7.48\times {10}^{23}$
• C. $6\times {10}^{23}$
• D. $6\times {10}^{20}$

Answer 1

The correct option is A $3.75\times {10}^{20}$

Q = ne

i.t = n.e

$n=\frac{1\times 60}{1.6\times {10}^{-19}}=3.75\times {10}^{20}\text{electrons}$