why is the standard electrode potential for different system are different
Answers
Answered by
1
Answer:
sorrrrrrrrrrrrrryyyyyyyyyyyyy
Answered by
1
Answer:
=1.70 V
Explanation:
ANSWER
The relationship between standard Gibbs energy change for a reaction and its cell potential is ΔG
o
=−nFE
cell
o
.
For manganese electrodes, ΔG
MnO
4
−
∣Mn
2+
o
=ΔG
MnO
4−
∣MnO
2
o
+ΔG
MnO
2
∣Mn
2+
o
−nFE
MnO
4
−
∣Mn
2+
o
=−nFE
MnO
4
−
∣MnO
2
o
−nFE
MnO
2
∣Mn
2+
o
5E
MnO
4
−
∣Mn
2+
o
=3×E
MnO
4
−
∣MnO
2
o
+2×E
MnO
2
∣Mn
2+
o
Substitute values in the above equation,
5×1.51V=3×E
MnO
4
−
∣MnO
2
o
+2×1.23V
E
MnO
4
−
∣MnO
2
o
=1.70 V
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