Question 58

The hydrogen electrode is dipped in a solution of pH = 3 at 25°C. The potential of the electrode will be $$-$$ _____ $$\times 10^{-2}$$ V.
$$\frac{2.303RT}{F} = 0.059$$ V. Round off the answer to the nearest integer.

Correct Answer: 18

For a standard hydrogen electrode in a solution of pH = 3:

$$E = E^o - \frac{2.303RT}{F}\text{pH} = 0 - 0.059 \times 3 = -0.177$$ V $$\approx -0.18$$ V

$$= -18 \times 10^{-2}$$ V.

The answer is $$\boxed{18}$$.

Create a FREE account and get:

The hydrogen electrode is dipped in a solution of pH = 3 at 25°C. The potential of the electrode will be $$-$$ _____ $$\times 10^{-2}$$ V.$$\frac{2.303RT}{F} = 0.059$$ V. Round off the answer to the nearest integer.