Question

The standard reduction potential of normal calomel electrode and reduction potential of saturated calomel electrodes are $0.27$ and $0.33Volt$ respectively. What is the concentration of $C{l}^{-}$ in saturated solution of KCl ?

• A.
  $0.1M$
• B.
  $0.01M$
• C.
  $0.001M$
• D.
  None

Answer 1

The correct option is A

$0.1M$
$E^{\circ }$ for normal calomel electrode =$E^{\circ }$ For saturated calomel electrode

$0.33=0.27-\frac{0.06}{2}log[C{l}^{-}{]}^2;[C{l}^{-}]=0.1M$