Ncert Exercises & Solutions

Given below are two statements:

Assertion (A):	E_{Ag⁺/ Ag} increases with an increase in the concentration of Ag⁺ ions.
Reason (R):	E_{Ag⁺/ Ag} has a positive value.

1.	Both (A) and (R) are true and (R) is the correct explanation of (A).
2.	Both (A) and (R) are true but (R) is not the correct explanation of (A).
3.	(A) is true but (R) is false.
4.	Both (A) and (R) are false.

Hint:

E_{cell} = E_{cell}^{o} - \frac{0.0591}{1} \log \frac{1}{[{Ag}^{+}]}

The cell potential value depends on the concentration of the Ag⁺

E_{cell} = E_{cell}^{o} - \frac{0.0591}{1} \log \frac{1}{[{Ag}^{+}]}

E_cell = E⁰ + 0.059 log Ag⁺

Thus E_{Ag⁺/ Ag} increase with the increase in the concentration of Ag⁺.