Question

A copper voltameter, a silver voltameter and a water voltameter are connected in series and current is

passed for some time. The ratio of the number of moles of copper, silver and hydrogen formed at the

cathode is​

Answer 1

Answer:

ANSWER

Cu

2+

+2e

−

→Cu

2H

+

+2e

−

→H

2

Ag

+

+e

−

→Ag

The charge is same as the current is same.

∴No.ofmoles∝

Numberofelectronsrequired

1

Cu:Ag:H

2

=

2

1

:1:

2

1

=1:2:1

Answer 2

Answer:

Cu2++2e−→Cu

2H++2e−→H2

Ag++e−→Ag

The charge is same as the current is same.

∴No.ofmoles∝Numberofelectronsrequired1

Cu:Ag:H2=21:1:21=1:2:1