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0.2 faraday charge is passed in 1 litre ...

`0.2` faraday charge is passed in 1 litre solution containing `0.1` molar `Fe^(+3)` ions. How many moles of iron get deposited at cathode assuming only iron is reduced in electrolytic process.
`(E_(Fe^(+3)//Fe^(+2))^(0)=0.77"V E"_(Fe^(+2)//Fe)^(0)=-0.44V)`

A

0.005 moles

B

0.033 moles

C

0.67 moles

D

0.1 moles

Text Solution

Verified by Experts

The correct Answer is:
A
`E_(Fe^(+3)//Fe)^(@) = -0.037` V as the reduction potential of `Fe^(+3)//Fe^(+2)` is higher initially all `Fe^(+3)` converts into `Fe^(+2)`, which further gets reduced to metallic iron.
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