Calculate the pH of a [0.000765) M solution of KOH

pH=10.88

Explanation:

Hello,

In this case, since potassium hydroxide is completely dissociated as shown below:

For which we understand it is a base, more specifically, a strong base; it means that the concentration of the OH⁻ equals the concentration of the potassium hydroxide, that is 0.000765M, for that reason we can directly compute the pOH:

Finally, since the pOH and the pH are related by:

The pH turns out:

Best regards.