Acids, Bases, & pH

Front

What is the definition of an acid?

Back

An acid is a substance that donates protons (H⁺) in a solution and has a pH less than 7.

Front

What is the definition of a base?

Back

A base is a substance that accepts protons (H⁺) or donates hydroxide ions (OH^-) in a solution and has a pH greater than 7.

Front

What is the pH scale range?

Back

The pH scale ranges from 0 to 14.

Front

What is the relationship between pH and pOH?

Back

pH + pOH = 14.

Front

What is the pH of a neutral solution?

Back

The pH of a neutral solution is 7.

Front

How do you calculate [OH^-] from [H⁺] concentration?

Back

[OH^-] = 1.0 x 10^-14 / [H⁺].

Front

If the pH of a solution is 3, what is its [H⁺] concentration?

Back

[H⁺] = 1.0 x 10^-3 M.

Front

What is the pOH of a solution with a pH of 2?

Back

The pOH is 12.

Front

What is the pH of a 1 x 10^-3 M solution of HNO₃?

Back

The pH is 3.

Front

What happens to pH when an acid is diluted?

Back

The pH increases (becomes less acidic) as the acid is diluted.