MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryElectrochemistryGeneral

If the salt bridge is removed suddenly from a working cell, the voltage

A.increases
B.decreases
C.drops to zero✓ Correct
D.may increase or decrease depending upon cell
Explanation

The main function of the salt bridge is to maintain electrical neutrality within the cell for the movement of electrons. However, when the salt bridge is removed, the movement of electrons is stopped. Hence, the voltage further decreases and drops to zero. Thus, the correct option is (c) voltage drops to zero. 10. The equation representing the process by which standard reduction potential of zinc can be defined is : (a) Zn2+ (s) + 2e–→ Zn (b) Zn (g)→ Zn2+(g) + 2e- (c) Zn2+ (g) + 2e-→ Zn (d) Zn2+ (aq.) + 2e-→Zn (s) Reduction is (gain of ) Standard Electrode Potential, Electrochemical Series and

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