Question

To Increase the potential of a given voltaic cell, I can A. Increase the concentration of...

To Increase the potential of a given voltaic cell, I can

A. Increase the concentration of the solution at the anode

B. Reduce the temperature

C. Increase the concentration of the solution at the cathode

D Increase the temperature.

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Homework Answers

Answer #1

Solution:

The correct option is C

(Increase in the concentration of solution of cathode)

Explanation :

Nernst equation can be written for the voltaic cell as,

E = E° - (0.0592/n) log Q

Where,

Q = reaction quotient = Concentration of solution of anode/Concentration of solution of cathode

Thus, from the above equation, it can be seen that decrease in value of Q, increases the cell potential.

Since, Q can be decreased by increasing the concentration of the solution of cathode.

Hence, value of cell potential increases.

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