Question

The passage of $1.5$ Faradays of electricity corresponds to the flow of how many electrons?

• A. $6\times {10}^{23}$
• B. $9\times {10}^{23}$
• C. $12\times {10}^{23}$
• D. $3\times {10}^{23}$

Answer 1

The correct option is B $9\times {10}^{23}$

$n\left(e^{-}\right)=\frac{Q}{F}$

$\Rightarrow$ $n\left(e^{-}\right)=\frac{1.5F}{F}$

$\Rightarrow$ $n\left(e^{-}\right)=1.5moles$ = $1.5\times 6.022\times {10}^{23}$

$\Rightarrow$ $9\times {10}^{23}electrons$