pH/pOH Calculations

Front

What is pH?

Back

pH is a measure of the hydrogen ion concentration in a solution, indicating its acidity or basicity on a scale of 0 to 14.

Front

What is pOH?

Back

pOH is a measure of the hydroxide ion concentration in a solution, indicating its basicity or acidity on a scale of 0 to 14.

Front

How are pH and pOH related?

Back

pH + pOH = 14 at 25°C.

Front

What is the formula to calculate pH from [H+]?

Back

pH = -log[H+].

Front

What is the formula to calculate pOH from [OH-]?

Back

pOH = -log[OH-].

Front

How do you find [H+] from pH?

Back

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

Front

How do you find [OH-] from pOH?

Back

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

Front

What is the [H+] if the pH is 7?

Back

[H+] = 1.0 x 10^-7 M.

Front

What is the [OH-] if the pOH is 7?

Back

[OH-] = 1.0 x 10^-7 M.

Front

If [OH-] = 1.0 x 10^-10 M, what is the pOH?

Back

pOH = 10.