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0.2864 g of Cu was deposited on passage ...

`0.2864 g` of `Cu` was deposited on passage of a current of `0.5` ampere for `30` minutes through a copper sulphate solution. The electrochemical equivalent of copper is

A

`0.32 g`

B

`0.00032 g`

C

`0.032 g`

D

`0.0032 g`

Text Solution

Verified by Experts

The correct Answer is:
B
In electrolysis, the mass of a substacne deposited or libereated when `1` ampere of current is passed through an electrolyte for `1` second (`1` coulomb of electricity) is known as its electrochemical equivalent `(Z)`. Therefore
`Z = ("Mass of Cu deposited")/("No. of Coulombs")`
`= (0.2864 g)/((0.5 A)(30 xx 60 s))`
`= 0.00032 g//C`
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