Saturated solution of KNO_3 is used to make s | vedclass

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(C) For a good salt bridge,the ionic mobilities (velocities) of the cation and anion should be nearly the same. If the velocities are significantly di

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velocity of both $K^{+}$ and $NO_3^-$ are nearly the same

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(C) For a good salt bridge,the ionic mobilities (velocities) of the cation and anion should be nearly the same. If the velocities are significantly different,the ions would not be able to neutralize the charge buildup in both half-cells at the same rate. This would create a liquid junction potential that restricts the flow of current. For $KNO_3$,the ionic velocities of $K^{+}$ and $NO_3^-$ are nearly identical,making it an ideal electrolyte for a salt bridge.

Saturated solution of $KNO_3$ is used to make salt bridge because

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