calculating pH and pOH

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 the negative logarithm of the hydroxide ion concentration: pOH = -log[OH-].

Front

What is the relationship between pH and pOH?

Back

pH + pOH = 14 at 25°C.

Front

What is the pH range for acids?

Back

The pH range for acids is from 0 to 6.9.

Front

What is the pH range for bases?

Back

The pH range for bases is from 7.1 to 14.

Front

What is the pH of a neutral solution?

Back

The pH of a neutral solution is 7.

Front

If [OH-] = 1 x 10^-4 M, what is the pH of the solution?

Back

The pH is 10.

Front

How do you calculate pOH from [OH-]?

Back

pOH = -log[OH-].

Front

If the pOH of a solution is 3.56, what is the pH?

Back

The pH is 10.44.

Front

What color indicates a strong base in pH indicators?

Back

Dark blue.