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. It is calculated as pH = -log[H+].

Front

What is pOH?

Back

pOH is a measure of the hydroxide ion concentration in a solution, indicating its basicity. It is calculated 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 [H+] from pH?

Back

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

Front

How do you calculate the pH from [H+]?

Back

pH = -log[H+].

Front

How do you calculate the [OH-] from pOH?

Back

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

Front

How do you calculate the pOH from [OH-]?

Back

pOH = -log[OH-].

Front

What is the [H+] concentration of a 1.0 x 10^-4 M HNO3 solution?

Back

1.0 x 10^-4 M.

Front

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

Back

3.

Front

What is the [H3O+] concentration if the pH is 8.43?

Back

3.7 x 10^-9 M.