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 basicity of 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 a net ionic equation?

Back

A net ionic equation shows only the species that participate in a chemical reaction, omitting spectator ions.

Front

What are spectator ions?

Back

Spectator ions are ions that do not participate in the actual chemical reaction and remain unchanged in solution.

Front

How do you calculate [H+] from pH?

Back

[H+] = 10^(-pH).

Front

How do you calculate [OH-] from pOH?

Back

[OH-] = 10^(-pOH).

Front

What is the product of the reaction between barium hydroxide and hydrochloric acid?

Back

The products are barium chloride and water.

Front

What is the balanced equation for the reaction of CuCl₂ and Na₂SO₄?

Back

CuCl₂(s) + Na₂SO₄(aq) → CuSO₄(aq) + 2NaCl(aq).

Front

If a solution has a pOH of 3.7, what is the [OH-]?

Back

[OH-] = 2.0 x 10^-4 M.