Question

How many coulmb of electricity are required for reduction Cu2+ to Cu

Answer 1

$\boxed{ \: \red{ \: 3.2 \times {10}^{ - 16}C \: } \: \: }$

The reaction which occurs is :-

$C {u}^{2 + } + 2 {e}^{ - } \rightarrow \: Cu$

Hence, 2 electrons are involved. One electron carries a charge of 1.6 × $10^{-19}$ C

Hence, 2 electrons contain a total charge of

$\boxed{ \: \red{ \: 3.2 \times {10}^{ - 16} C \: } \: \: } \:$