`KNO_(3)` is used to make salt bridge because:

Options

A. velocity of `K^(+)` is greater than that of `NO_(3)^(-)`
B. velociyt 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 souble in water

Answer

C

Explanation

The salt bridge possesses an electrolyte having nearly same ionic mobilities of its cation and anion.