PH Calculations

Front

What is pH?

Back

pH is a measure of the acidity or basicity of a solution, defined as the negative logarithm of the hydrogen ion concentration: pH = -log[H+].

Front

What is pOH?

Back

pOH is a measure of the hydroxide ion concentration in a solution, defined as pOH = -log[OH-].

Front

What is the relationship between pH and pOH?

Back

pH + pOH = 14 at 25°C.

Front

How do you calculate the concentration of hydrogen ions from pH?

Back

[H+] = 10^(-pH).

Front

How do you calculate the concentration of hydroxide ions from pOH?

Back

[OH-] = 10^(-pOH).

Front

If the pH of a solution is 4.0, what is the pOH?

Back

10.0

Front

The pH of a solution is 8.43. What is the [H3O+] concentration?

Back

3.7 x 10^-9 M.

Front

If the [H3O+] of a solution is 1 x 10^-3 M, what is the pH?

Back

3.

Front

For a solution, what is the sum of pH and pOH?

Back

14.

Front

What is the [OH-] if the [H+] is 1.0 x 10^-3 M?

Back

1.0 x 10^-11 M.