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How Many Hours Does It Take to Reduce 3 Moles of `Fe^(3+)`To `Fe^(2+)` with 2.0 a Current Intensity? - ISC (Arts) Class 12 - Chemistry (Theory)

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Question

How many hours does it take to reduce 3 moles of `Fe^(3+)`to `Fe^(2+)` with 2.0 A Current intensity?

Solution

`Fe^(3+) + e^(-) -> Fe^(2+)`

∵ for 1 mole of `Fe^(3+)`,  1 mole of `e^(-)` is required

∴ for 3 moles of `Fe^(3+)`, 3 moles of `e^(-)` are required

`∴ 3e^(-) = 3F = 3 xx 96500C`

`Q = I xx t`

`3 xx 96500 = 2 xx t`

`:. t = (3 xx96500)/(2 xx 3600)`

t = 40.2 hrs

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APPEARS IN

 2014-2015 (March) (with solutions)
Question 1.3.2 | 1.00 mark
Solution How Many Hours Does It Take to Reduce 3 Moles of `Fe^(3+)`To `Fe^(2+)` with 2.0 a Current Intensity? Concept: Normality, Molality - Simple Problems Relating Mass, Molar Mass and Mole.
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