pOH

Part of the Acids and Bases section of Coddy's Chemistry journey. Lesson 15 of 30.

$\mathrm{pOH} = -\log[\mathrm{OH^-}]$ , and at 25 °C:

$\mathrm{pH} + \mathrm{pOH} = 14$

Shortcut for bases: pOH from [OH⁻], then pH = 14 − pOH. 0.01 M NaOH: pOH 2, pH 12.

Challenge

A test strip shows that a soap solution has pOH 4. What is its pH, and what is [OH⁻]?

Try it yourself

Acids and basesWork out the solution

Test yourself

This lesson includes a short quiz. Start the lesson to answer it and track your progress.

All lessons in Acids and Bases

1Acids and Bases

4Neutralization

2Strong and Weak

5Acids Around Us

3The pH Scale

6Practice Problems