the standard reduction potential for fe2+/Feand Sn2+ electrodes are -0.44and-0.14volt resp.For the given cell reaction
Fe2+ +Sn=Fe+Sn2+the standard EMF is
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Explanation:
Correct option is
D
- 0.30 V
For the cell reaction, Fe acts as cathode and Sn as anode beacuse Fe ion is undergoing reduction. Hence,
E
cell
o
=E
cathode
o
−E
anode
o
=−0.44−(−0.14)=−0.30 V
The negative EMF suggests that the reaction goes spontaneously in the reversed direction.
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