1. Electrolysis of H2SO4 gives following two reactions :
2H+ + 2e- H2
2H2O O2 + 2e- + 4H+
2. 2 mole of electrons give 1 mole of O2 and H2 each.
So,2F of electricity gives 2 moles of total gases.
3. Volume of 1 mole = 22.4 L
Volume of 2 moles = 44.8 L