3 Faradays of electricity was passed through an aqueous solution of iron (II) bromide. The weight of iron metal (at. wt. = 56) deposited at the cathode (in g) is

Question

3 Faradays of electricity was passed through an aqueous solution of iron (II) bromide. The weight of iron metal (at. wt. = 56) deposited at the cathode (in g) is, 65, 84, 112, 168

MARKS App · Accepted Answer

F e 2 + + 2 e - → F e E F e = 56 2 = 28 w F e = E F e × number of Faraday = 28 × 3 = 84 g

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