4.5 ~g of aluminium (at mass 27 amu ) is deposited at cathode from Al ³⁺ solution by a certain quality of electric charge. The volume of hydrogen produced at STP from H ⁺ ions in solution by the same quantity of electric charge will be:

Step-by-step solution

We know that, I Faraday charge liberates 1 eq. of substance. eq. wt. of AI = wt.of Al eq. w t = 4.5 9 =0.5 no. of Faraday required =0.5 no. of eq. of H ₂ produce =0.5 eq. Volume occupied by 1 eq. of H ₂= 22.4 2 =11.2 Volume occupied by 0.5 eq =11.2 0.5 =5.6 litre at STP