pH (Acids/Bases)

Front

What happens to the pH of a solution when H+ ions are added?

Back

The pH would go down.

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 pH range of a base?

Back

A base has a pH greater than 7.

Front

What is the pH range of an acid?

Back

An acid has a pH less than 7.

Front

What is a neutral solution?

Back

A neutral solution has a pH of 7.

Front

What is the role of H+ ions in determining acidity?

Back

The concentration of H+ ions determines the acidity of a solution; more H+ ions mean a lower pH (more acidic).

Front

What is the role of OH- ions in determining basicity?

Back

The concentration of OH- ions determines the basicity of a solution; more OH- ions mean a higher pH (more basic).

Front

What is a buffer?

Back

A buffer is a solution that resists changes in pH when small amounts of acid or base are added.

Front

What is the pH of pure water?

Back

The pH of pure water is 7, making it neutral.