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Equivalent, Molar Conductivity and Cell Constant

The standard ...

Question

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

0.1 M

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0.01 M

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0.001 M

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None

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Solution

The correct option is A
$0.1 M$
$E^{\circ}$ for normal calomel electrode = $E^{\circ}$ For saturated calomel electrode

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

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