Open Sci Ed

How is pH related to the concentration of hydronium ions in solution?

• high concentration is a low pH

• low concentration is a high pH

• neither answer offered is correct

• both answers are correct

What determines the degree to which an acid or base is weak or strong?

• how well the solute is ground up

• how high the temperature of the solvent is

• how well it dissociates or ionizes in water

• the pressure it's mixed under

Are strong acids and bases good electrolytes?

• yes

• no

• depends on the acid or the base in solution

• acids and bases don't have anything to do with electrolytes

Why is pure water neutral?

• it contains an equal concentration of hydronium and hydroxide ions

• it has an even number of hydronium ions

• it has an even number of hydroxide ions

• it doesn't contain any hydronium or hydroxide ions

What is a buffer?

• solution that causes large changes in pH

• solution that is resistant to large changes in pH

• a change in pH

• a solvent that has no pH

A solution of sodium hydroxide in water is most likely to have a pH close to

• 14

• 7

• 5

• 3

Substances that form ions when dissolved in water are

• solutions

• molecules

• polar

• electrolytes

Identify the following compound as an acid, base, or salt: LiOH

• acid

• base

• salt

Identify the following compound as an acid, base, or salt: H2CO3

• acid

• base

• salt

Identify the following compound as an acid, base, or salt: Ba(OH)2

• acid

• base

• salt