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Three faradays of electricity was passed...

Three faradays of electricity was passed through an aqueous solution of iron (II) bromide. The mass of iron metal (at mass 56) deposited at the cathode is:

A

56

B

84

C

112

D

168

Text Solution

Verified by Experts

The correct Answer is:
B
`Fe^(2+) + 2 e^(-) to Fe , E_(Fe) = (56)/(2) = 28`
1 Faraday liberates = 28 g of Fe
3 Faraday liberates = `3 xx 28 = 84` g
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