Electrolysis of aq. K2SO4 using inert electrodes is carried out by passing 10 amperes for 9650 amperess. Weight of the substance obtained at anode is

Sulphate ion can never get oxidized further (Sulphur is in its highest O.S).Thus at anode O2 gas is liberated;2H2O→O2+4H++4e ;∴WO2=EitF=EqF WO2=8×10×965096500 WO2=8 g