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Saturated solution of KNO3 is used to ma...

Saturated solution of `KNO_3` is used to make "salt bridge" because .

A

Velocity of `K^(+)` is greater than that of `NO_(3)^(-)`

B

Velocity of `NO_(3)^(-)` is greater than that of `K^(+)`

C

Velocity of both `K^(+)` and `NO_(3)^(-)` are nearly the same

D

`KNO_(3)` is highly soluble in water

Text Solution

Verified by Experts

The correct Answer is:
C
The salt used to make .salt-bridge. must be such that the ionic mobility of cation and anion are of comparable order so that they can keep the anode and cathode half cells neutral at all times `KNO_(3)` is used because velocities of `K^(+)` and `NO_(3)^(-)` ions are nearly same.
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