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A certain current liberates 0.5g of hyd...

A certain current liberates `0.5g` of hydrogen in 2 hours. How many grams of copper can be liberated by the same current flowing for the same time in a copper sulphate solution ?

A

12.7gm

B

15.9gm

C

31.8gm

D

63.5gm

Text Solution

Verified by Experts

The correct Answer is:
A
`0.5g=(0.5)/(2)"mol of" H_(2)`
0.25 mol of `H_(2)` is liberated b y electricity ltb rgt `=2xx96500xx0.25C`
Ca liberated by `2xx96500xx0.25C`
`=(2xx96500xx0.25)/(2xx96500)= 0.2` mol
Amount of `Cu=0.2xx63.5=12.7g`
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