The standard electrode potential of the half cells is given below: Zn2++2e−→Zn;E=−0.76V Fe2++2e−→Fe;E=−0.44V The emf of the cell Fe2+=Zn−→Zn2++Fe
1.54V
−1.54V
0.32V
+0.19V
A
−1.54V
B
1.54V
C
0.32V
D
+0.19V
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Solution
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The correct option is C0.32V E0cell=(E0Fe2+|Fe+E0Zn|Zn2+)
=(−0.44V+0.76)
E0=+0.32Volt
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Q1
The standard electrode potential of the half cells is given below: Zn2++2e−→Zn;E=−0.76V Fe2++2e−→Fe;E=−0.44V The emf of the cell Fe2+=Zn−→Zn2++Fe
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Q2
The standard electrode potential of the half cells are given below -
Zn2++2e−→Zn;E1=−7.62V
Fe2++2e−→Fe;E2=−7.81V
The emf of the cell, Fe2++Zn→Zn2++Fe is:
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Q3
The standard reduction potentials E⊝ for the half reactions are follows :
Zn→Zn2++2e−;E⊝=+0.76V Fe→Fe2++2e−;E⊝=0.41V
The EMF for the cell reaction Fe2+Zn→Zn2++Fe is:
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Q4
The standard reduction potential Eo for half reactions are,
Zn→Zn2++2e−;Eo=−0.76V
Fe2++2e−→Fe;Eo=+0.41V
The emf of the cell reaction; Fe2++Zn→Zn2++Fe is:
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Q5
The standard oxidation potentials, E∘, for the half reactions are as, Zn→Zn2++2e−;E∘=+0.76volt Fe→Fe2++2e−;E∘=+0.41volt The emf of the cell, Fe2++Zn→Zn2++Fe is: