in a cell that utilises the reaction

Zn(s) + 2H+(aq)  -----> Zn⁺²(aq) +H₂(g) addition of H₂SO_{4  to} cathode compartment,will shift the equilibrium in which direction?

whether E wouid be increased or decreased?

Addition of H+ will increaase  the Emf .... and the equllibrium shifts to right..... IN GENERAL, THE CATHODE COMPARTMENT concentration must increase....