Chapter 5 - Acids, Bases And Salts

Question 1

What is an acid

Answer 1

An acid is a substance that ionises in water into H+ ions

Question 2

What is an alkali

Answer 2

An alkali is a substance that ionises in water into OH- ions

Question 3

What is the difference between strong and weak acids

Answer 3

The difference is that strong acids fully ionise in water

Question 4

What is a salt

Answer 4

A salt is a compound formed when some or all of the hydrogen ions of an acid are replaced by metal or ammonium ions

Question 5

What is the equation for acids and metals

Answer 5

Acids + Metals -> Salt + Hydrogen

Question 6

What is a base

Answer 6

A base is a metal oxide or hydroxide that neutralises an acid to produce a salt and water

Question 7

What is the equation for acids and carbonates

Answer 7

Metal Carbonate + Acid -> Salt + Water + Carbon Dioxide

Question 8

What is the equations for acids and ammonia

Answer 8

Ammonia + Acid -> Ammonium Salt

Question 9

What are the two ways you can prepare a salt

Answer 9

To prepare a salt you either add an insoluble substance in excess to the acid or carry out titration