Answer the following question given this paragraph: 

As with the hydrogen-ion concentration, the concentration of the hydroxide ion can be expressed logarithmically by the pOH. The pOH of a solution is the negative logarithm of the hydroxide-ion concentration.


Q: The negative logarithm of the hydroxide-ion concentration of a solution is called?

 Choices:

- the hil

- the hop

- the piel

- the poh

A:
the poh
