Select incorrect statement: - Vidyadip

MCQ

Select incorrect statement:

A
If salt$-$bridge is removed, potential falls to zero.
B
Liquid$-$junction potential developed across the boundary of the two solutions of different concentration cells are used.
✓
Calomel electrode contains calcium chloride solution in contact with $Pt$ electrode.
D
Quinhydrone electrode is reversible to $H+.$

✓

Answer

Correct option: C.

Calomel electrode contains calcium chloride solution in contact with $Pt$ electrode.

Calomel eletrode contains calomel paste $\ce{(H_{g2}Cl_2)}$ in contact with $\ce{Hg(l)}$ and $\ce{(aq) KCl}$ solution$. Pt$ electrode is dipped to make contact.

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