A certain amount of charge is passed through acidified H2O A total of 168 ml of H2 and - Chemistry - Electrochemistry

Question

A certain amount of charge is passed through acidified H2O A total
of 168 ml of H2 and O2 were evolved at STP What is the magnitude of
charge passed during electrolysis ? Answer is 965 C

Vartika Jain · Accepted Answer

Dear Student,

On electrolysis of acidified water, reaction occuring areAt cathode : 4H+ + 4e- → 2H2(g)At anode : 4OH- → 2H2O + O2(g) + 4e-Overall reaction is 2H2O → 2H2(g) + O2(g)From the reaction we can see that3 mol of gas is produced by 4mol of electronor, 3×22400 mL of gas is produced by 4×96500 chargeSo, 168 ml of gas is produced by 4×965003×22400×168=965 C

A certain amount of charge is passed through acidified H2O . A total of 168 ml of H2 and O2 were evolved at STP .What is the magnitude of charge passed during electrolysis ? Answer is 965 C .