A standard galvanic cell is constructed with Co 2+ | Co and Ag + | Ag half cell

Question

A standard galvanic cell is constructed with Co2+|Co and Ag+|Ag half cell compartments connected by a salt bridge. Which of the following statements are correct?

Hint: Refer to a table of standard reduction potentials.

(Choose all that apply.)

A- Ag+ is reduced at the cathode.

B- Ag is oxidized at the anode.

C- The cathode compartment is the Co2+|Co compartment.

D- In the external circuit, electrons flow from the Ag+|Ag compartment to the Co2+|Co compartment.

E- As the cell runs, anions will migrate from the Ag+|Ag compartment to the Co2+|Co compartment.

Explanation / Answer

A standard galvanic cell is constructed with Co2+|Co and Ag+|Ag half cell compartments connected by a salt bridge. Which of the following statements are correct?

Solution

Reduction potential of the Ag+ is 0.80 V and Co^2+ is 0.28 V

A- Ag+ is reduced at the cathode. = True because reduction potential of the Co^2+ is lower therefore it reduces the Ag+

B- Ag is oxidized at the anode = False .

C- The cathode compartment is the Co2+|Co compartment = False .

D- In the external circuit, electrons flow from the Ag+|Ag compartment to the Co2+|Co compartment.= False

E- As the cell runs, anions will migrate from the Ag+|Ag compartment to the Co2+|Co compartment = False

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