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When same quantity of electricity is pas...

When same quantity of electricity is passed for half an hour, the amount of Cu and Cr deposited are respectively `0.375` g and `0.30` g. Ratio of electrochemical equivalent of Cu and Cr is

A

0.8

B

1.25

C

2.5

D

1.62.

Text Solution

Verified by Experts

The correct Answer is:
B
Weights deposited are in the ratio of their eq.
wts. `((W_(2))/(W_(2))=(E_(1))/(E_(2)))`
Now Z= E/96500 i.e. Z`prop` E
`therefore (W_(1))/(W_(2))=(Z_(1))/(Z_(2))=(0.375)/(0.300)=1.25`
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