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What is the [Fe^(2+)] in a cell at 25^(@...

What is the `[Fe^(2+)]` in a cell at `25^(@)C` for which E = `-0.458`V with a standard hydrogen electrode?
`Fe^(2+)(aq) + 2e^(-) rightarrow Fe(s)` `E^(@) = -0.440V`

A

0.246 M

B

0.496 M

C

2.01 M

D

4.06 M

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The correct Answer is:
A
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