Question 1
The lithium-ion battery is based on:
◦ Li
+(aq)/Li(s) couple
◦ Co
3+(aq)/Co
2+(aq) couple
◦ Co(III)/Co(IV) couple
◦ both Li
+(aq)/Li(s) and Co
3+(aq)/Co
2+(aq)
◦ both Li
+(aq)/Li(s) and Co(III)/Co(IV)
Question 2
The net reaction in a voltaic cell with
E°cell = +0.726 V is,
2 Fe
3+(aq) + 3 Zn(s) → 2 Fe(s) + 3 Zn
2+(aq)
What is Δ
G° for this reaction at 25 °C?
◦ -210 kJ
◦ -140 kJ
◦ -700 kJ
◦ -463 kJ
◦ -420 kJ