The standard electrode potential (reduction) of Pt/Fe2−,Fe3+ and Pt/Sn4+,Sn2+ are 0.77 V and 0.15 v respectively at 25oC The standard EMF of the reaction Sn4++2Fe2+→Sn2++2Fe3+ is:
A
1.69 V
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B
-0.92 V
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C
+ 0.31 V
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D
+ 0.85 V
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