pH and pOH Calculation Practice

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 from 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, calculated as pOH = 14 - pH.

Front

How do you calculate [H+] from pH?

Back

[H+] = 10^(-pH). For example, if pH = 4, then [H+] = 10^(-4) M.

Front

How do you calculate [OH-] from pOH?

Back

[OH-] = 10^(-pOH). For example, if pOH = 2, then [OH-] = 10^(-2) M.

Front

What is the relationship between pH and pOH?

Back

pH + pOH = 14.

Front

What is the [H+] if the pH is 4.0?

Back

1.0 x 10^-4 M.

Front

What is the pOH of a solution where the [OH-] is 7.3 x 10^-2 M?

Back

1.14.

Front

What is the [OH-] if the pH is 4.9?

Back

7.94 x 10^-10 M.

Front

What does a pH greater than 7 indicate?

Back

A pH greater than 7 indicates a basic (alkaline) solution.

Front

What does a pH less than 7 indicate?

Back

A pH less than 7 indicates an acidic solution.