Question 1
A salt bridge is used to
◦ determine the direction of the cell reaction.
◦ control whether the cell is electrolytic.
◦ provide reactants in a fuel cell.
◦ allow the ion flow necessary for cell neutrality.
Question 2
Given that Br
2(
g) + 2 e
- → 2 Br
-(
aq) is the reduction half-reaction for the overall reaction
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what is the oxidation half reaction?
◦ Ag(
s) + Br
-(
aq) → AgBr(
s) + e
-◦ 2 Br
-(
aq) → Br
2(
g) + 2 e
-◦ Ag(
s) → Ag
+(
aq) + e
-◦ Ag(
s) + Br
2(
g) + e
- → AgBr(
s) + Br
-(
aq)