A standard galvanic cell is constructed with Cu^2+ | Cu^+ and Co^2+ |Co half cel

Question

A standard galvanic cell is constructed with Cu^2+ | Cu^+ and Co^2+ |Co half cell compartments connected by a salt bridge. Which of the following statements are correct? (Choose all that apply.) Cu^2+ is reduced at the cathode. In the external circuit, electrons flow from the Co^2+|Co compartment to the Cu^2+|cu^+ compartment. As the cell runs, anions will migrate from the Co^2+| Co compartment to the Cu^2+|Cu^+ compartment. Cu^+ is oxidized at the anode. The anode compartment is the Co^2+| Co compartment.

Explanation / Answer

from data table:

Eo(Co2+/Co(s)) = -0.280

Eo(Cu2+/Cu+) = 0.159

the electrode with the greater Eo value will be reduced and it will be cathode

here:

cathode is (Cu2+/Cu+)

anode is (Co2+/Co(s))

The chemical reaction taking place is

Cu2+ + Co(s) --> Cu+ + Co2+

Cu2+ is reduced at cathode

so, 1st option is correct

electrons flow from anode to cathode, the anions flow from cathode to anode to balance it out

so, option 2 is correct

and option 3 is wrong

option 4 is wrong

option 5 is correct

Answer:

option 1,2 and 5

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