Question

In an electrolysis of water, a. Name the gas collected at anode and cathode. b.Why is the volume of gas collected at one electrode double than the other? c. What would happen if dil H2 SO4 is not added to water?

Answer 1

the gas collected in anode is Oxygen and Cathode is hydrogen if dilute H2 S o4 is not added to water the passing of electricity and water dissociates to hydrogen and oxygen will be stopped

Answer 2

■1■

at anode : oxygen is collected

at cathode : hydrogen is collected

■2■

h20 ---(electric current)---> h2 + 02

thus water decomposes to give hydrogen and oxygen in the ratio of 2:1 by volume . hydrogen gas is present in one of the test tube is double the volume than the other gas ...

■3■

if dilute h2so4 is not added to water then the h20 will not produce its ion and will not disassociate to give h2 and O2 gas ....

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