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What is the [Fe2+] in a cell at 25 ˚C for which E = –0.458 V vs a standard hydrogen electrode? Fe2+(Electrochemistry Chemistry Question

Question

What is the [Fe2+] in a cell at 25 ˚C for which E = –0.458 V vs a standard hydrogen electrode?
Fe2+(aq) + 2e– → Fe(s) E° = –0.440 V

A.

0.246 M

✓ Correct
B.

0.496 M

C.

2.01 M

D.

4.06 M

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