Acids Bases pH pOH

Front

What is the pH scale?

Back

The pH scale measures the acidity or basicity of a solution, ranging from 0 (very acidic) to 14 (very basic), with 7 being neutral.

Front

What does a pH of 7 indicate?

Back

A pH of 7 indicates a neutral solution, where the concentration of H+ ions equals the concentration of OH- ions.

Front

What is an acid?

Back

An acid is a substance that releases H+ ions when dissolved in water.

Front

What is a base?

Back

A base is a substance that releases OH- ions when dissolved in water.

Front

What is the relationship between pH and pOH?

Back

pH + pOH = 14; this equation shows the inverse relationship between acidity and basicity.

Front

What is a strong acid?

Back

A strong acid is an acid that completely dissociates into its ions in solution, resulting in a high concentration of H+ ions.

Front

What is a strong base?

Back

A strong base is a base that completely dissociates into its ions in solution, resulting in a high concentration of OH- ions.

Front

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

Back

[OH-] = 10^(-pOH); this formula allows you to find the hydroxide ion concentration from the pOH value.

Front

If a solution has a pOH of 5.2, what is the [OH-]?

Back

[OH-] = 6 x 10^-6 M.

Front

How do you calculate pOH from pH?

Back

pOH = 14 - pH; this formula allows you to find the pOH value from the pH.