Take this Quiz: GCSE Chemistry: Acids, Bases and Salts | Zestly

Question 1

Which of the following statements correctly describes the pH scale in the context of aqueous solutions?

Accepted Answer

A decrease of one unit on the pH scale represents a ten-fold increase in hydrogen ion concentration.

Question 2

When hydrochloric acid reacts with a metal carbonate, which three products are typically formed?

Accepted Answer

A metal chloride salt

Question 3

Which of the following correctly identifies the salt produced when sulfuric acid reacts with magnesium oxide?

Accepted Answer

Magnesium sulfate

Question 4

Which of the following statements accurately distinguish between the terms 'strong' and 'concentrated' in relation to acids?

Answer

A strong acid is one that is completely ionised in aqueous solution.

Answer

A concentrated acid is one that is completely ionised in aqueous solution.

Answer

A concentrated acid contains a large amount of solute per unit volume of solution.

Answer

A strong acid must always be a concentrated acid.

Question 5

What is the primary purpose of adding an excess of an insoluble base to an acid when preparing a pure, dry soluble salt?

Answer

To increase the rate of the reaction.

Answer

To ensure all the acid has reacted.

Answer

To neutralise the water produced.

Answer

To act as a catalyst for the crystallisation process.