Question

1. Sodium can be extracted by heating naturally occurring salt until it is molten. An electrochemical process is then used to extract the sodium. Cl2 is produced at the anode, and Na is collected at the cathode. A standard reduction potential graph for the reaction is shown below.

(A and B are negative with A being closer to 0.)

a. Write the half-reactions that occur at the anode and the cathode. Identify each as either oxidation or reduction. (4 points)

b. Based on these half-reactions, determine the standard electrode potential levels that should be placed at points A and B on the graph. (2 points)

c. Use the graph to determine Eºcell . (2 points)

d. Based on the graph, is the process shown in the figure an example of a galvanic reaction or an electrolytic reaction? Explain. (2 points)

Answer 1

I can do a but not b,c,d. No diagram.