Q. Saturated solution of ${KNO}_{3}$ is used to make ‘salt-bridge’ because
A) Velocities of both $K^{+}\ and\ {NO}_{3}^{-}$ are nearly the same
B) Velocity of $K^{+}$is greater than that of ${NO}_{3}^{-}$
C) Velocity of ${NO}_{3}^{-}$ is greater than that of $K^{+}$
D) ${KNO}_{3}$ is highly soluble in water
Explanation
(a)
Velocities of both $K^{+}$ and ${NO}_{3}^{-}$ are nearly the same in ${KNO}_{3},$ so it is used to make salt-bridge
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.