Sec 3 Acids and Bases

The pH of an acid is 2. What is the pH of the solution when excess calcium carbonate is added?

• 2

• 5

• 7

• 12

The pH of an acid is 2. What is the pH of the solution when excess sodium hydroxide is added?

• 2

• 5

• 7

• 12

The pH of an acid is 2. What is the pH of the solution when excess sodium chloride is added?

• 2

• 5

• 7

• 12

Which ionic equation represents the neutralisation of aqueous sodium hydroxide and hydrochloric acid?

Which statement about the reaction between ammonium sulfate and sodium hydroxide is correct?

• carbon dioxide gas is produced

• ammonia is produced

• ammonium hydroxide is produced

• it is a neutralisation reaction

Calcium hydroxide and calcium carbonate both react with dilute nitric acid. In what way are the reactions different?

• a gas is produced

• water is a product

• the salt formed is calcium nitrate

• the pH of the solution increases

A strong acid undergoes _ ionisation in water to produce _ ions.

• complete; hydrogen

• incomplete; hydrogen

• complete; hydroxide

• incomplete; hydroxide

Which statement about hydrogen chloride gas is true?

• It conducts electricity.

• It reacts with magnesium to produce hydrogen gas.

• It produces hydrogen ions when dissolved in water.

Which of the following is NOT a use of sulfuric acid?

• laxatives

• fertilisers

• detergents

• car batteries

Which oxide below is a neutral oxide?

• aluminium oxide

• carbon monoxide

• sulfur dioxide

• zinc oxide