What is the pOH of black coffee if pH level 5.0?

Here's how to calculate the pOH of black coffee:

Understanding pH and pOH

* pH: A measure of the acidity or alkalinity of a solution. A pH of 7 is neutral, below 7 is acidic, and above 7 is alkaline (basic).

* pOH: Similar to pH, but it measures the concentration of hydroxide ions (OH-) in a solution.

* Relationship: pH and pOH are related by the following equation:

pH + pOH = 14

Calculation

1. Given: pH = 5.0

2. Substitute into the equation: 5.0 + pOH = 14

3. Solve for pOH: pOH = 14 - 5.0 = 9.0

Therefore, the pOH of black coffee with a pH of 5.0 is 9.0.