Question

The Edison storage cell is represented as :
Fe(s)/FeO(s)/KOH(aq)/Ni₂O₃ (s)/Ni(s)
The half-cell reactions are:
$N{i}_2{O}_3\left(s\right)+H_{2}O\left(l\right)+2e^{-}\to 2NiO\left(s\right)+2O{H}^{-};E^{\circ }+0.40$
$FeO\left(s\right)+H_{2}O\left(l\right)+2e^{-}\to Fe\left(s\right)+2O{H}^{-};E^{\circ }=-0.87$,
What is the maximum amount of electrical energy that can be obtained from one mole of Ni₂O₃ ?

• A. 344.6 KJ
• B. 87.9 KJ
• C. 2478.8 KJ
• D. 245.11 KJ

Answer 1

The correct option is D

245.11 KJ