Manipal MET2015ChemistryElectrochemistry
The standard reduction potential E^ for half reactions are, array ll Zn Zn ²⁺+2 e⁻ ; E^ =+0.76 ~V Fe ²⁺+2 e⁻ 10 & ; E^ =+0.41 array The emf of the cell reaction; Fe ²⁺+ Zn Zn ²⁺+ Fe is
Options
- A- 0.35 V
- B+0.35 ~V
- C+1.17 ~V
- D-1.17 ~V
Correct answer
A. - 0.35 V
Step-by-step solution
aligned E_ cell & =E_ ( (cathode) ) -E_ ( (anode) ^ & =0.41-0.76=-0.35 ~V aligned