Question

In a cell that utilizes the reaction
Zn(*) + 2H+(aq) → Zn2+(aq)+ H2(g)
addition of H2SO4 to cathode compartment, will
(a) lower the E and shift equilibrium to the left
(b) lower the E and shift the equilibrium to the right
(c) increase the E and shift the equilibrium to the right
(d) increase the E and shift the equilibrium to the left.

Answer 1

Correct option(c) increase the E and shift the equilibrium to the right

Explanation:

If H2SO4 is added to cathodic compartment, (towards reactant side), then Q decrease (due to increase in H+).

Hence, equilibrium is displaced towards right and Ecell increases.