Question

A solution has a pOH of 5.What is the pH?Classify the solution as acid, base, or neutral.

Answer 1

The pOH and the pH are related by the following equation:

`pH+pOH=14`

Thus, we can solve for pH and substitute the pOH = 5 to find the pH:

`\begin{gathered} pH+pOH=14 \\ pH=14-pOH \\ pH=14-5 \\ pH=9 \end{gathered}`

So, the pH is 9.

We can classify the solution by using the folowing:

`\begin{gathered} pH<7\to acid \\ pH=7\to neutral \\ pH>7\to base \end{gathered}`

Since the pH is 9, it is greater than 7, so the solution is a base.