Chapter 18, Problem 75A

What is the relationship between the $\text{pOH}$ and the ${\text{OH}}^{-}$ ion concentration of a solution?

Interpretation Introduction

Interpretation:

The relationship between $pOHand\left[O{H}^{-}\right]$ of a solution is to be written.

Concept introduction:

The value of $pOH$ helps in calculating concentration of hydroxyl ion in solution.

Answer to Problem 75A

$pOH=-\log \left[O{H}^{-}\right]$

Explanation of Solution

The relationship between $pOHand\left[O{H}^{-}\right]$ of a solution is:

$pOH=-\log \left[O{H}^{-}\right]$

If the value of $pOH$ is 2, it means concentration of hydroxyl ion is ${10}^{-2}M$ in the solution.

Conclusion

The relationship between $pOHand\left[O{H}^{-}\right]$ of a solution is:

$pOH=-\log \left[O{H}^{-}\right]$