Part A
Identify the anode and cathode, and indicate the direction of Na+ ion and NO3 - ion flow from the salt bridge.
1) Al is the anode and Co is the cathode; Na+ ions flow into half-cell compartment (A) and NO3 - ions flow into half-cell compartment (B).
2) Co is the anode and Al is the cathode; Na+ ions flow into half-cell compartment (A) and NO3 - ions flow into half-cell compartment (B).
3) Co is the anode and Al is the cathode; NO3 - ions flow into half-cell compartment (A) and Na+ ions flow into half-cell compartment (B).
4) Al is the anode and Co is the cathode; NO3 - ions flow into half-cell compartment (A) and Na+ ions flow into half-cell compartment (B).
Part B
Identify the anode and cathode, and indicate the direction of ion flow to and from each electrode.
1) Al is the anode and Co is the cathode; Co2+ ions flow to the cathode and Al3+ ions flow from the anode.
2) Al is the anode and Co is the cathode; Al3+ ions flow to the anode and Co2+ ions flow from the cathode.
3) Co is the anode and Al is the cathode; Co2+ ions flow to the anode and Al3+ ions flow from the cathode.
4) Co is the anode and Al is the cathode; Al3+ ions flow to the cathode and Co2+ ions flow from the anode
Part C
What is the balanced equation for the cell reaction?
1) 2 Al(s) + 3 Co2+(aq) → 2 Al3+(aq) + 3 Co(s)
2) 2 Al3+(aq) + 3 Co2+(aq) → 2 Al(s) + 3 Co(s)
3) 2 Al(s) + 3 Co(s) → 2 Al3+(aq) + 3 Co2+(aq)
4) 2 Al3+(aq) + 3 Co(s) → 2 Al(s) + 3 Co2+(aq)
Part D
What is the shorthand notation for the cell?
1) Co(s) | Co2+(aq) || Al(s) | Al3+(aq)
2) Al(s) | Al3+(aq) || Co2+(aq) | Co(s)
3) Al(s) | Al3+(aq) || Co(s) | Co2+(aq)
4) Co(s) | Co2+(aq) || Al3+(aq)| Al(s)
Part E
What is the quantitative change in the cell voltage on increasing the ion concentration in the anode compartment by a factor of 10?
1) -0.03 V
2) +0.02 V
3) -0.02 V
4) +0.03 V
Part F
What is the quantitative change in the cell voltage on increasing the ion concentration in the cathode compartment by a factor of 10?
1) -0.02 V
2) +0.03 V
3) +0.02 V
4) -0.03 V
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