5.6 Making More Salts

Question 1

Acid + alkali —>

Answer 1

Salt + water

Question 2

What happens in neutralisation reactions?

Answer 2

• H+ ions from the acid react with OH- ions from the alkali
• the ions react to form water molecules

Question 3

Ionic equation for neutralisation

Answer 3

H+(aq) + OH- (aq) —> H2O (l)

Question 4

What can you make by reacting a metal with an alkali?

Answer 4

Ammonium or metal salts

Question 5

Ammonia formula

Answer 5

NH3

Question 6

Ammonia reacting with water equation

Answer 6

NH3 (aq) + H2O (l) —> NH4+ (aq) + OH- (aq)

Question 7

Acid + ammonia solution —>

Answer 7

An ammonium salt + water

Question 8

Write the word equation for when ammonia solution reacts with nitric acid

Answer 8

Nitric acid + ammonia solution —> ammonium nitrate + water

Question 9

How would you be able to tell when the acid and alkali have completely reacted?

Answer 9

• using an acid/base indicator
• carry out the experiment with the indicator added to see how much acid reacts completely with alkali
• run that volume of acid into the solution again, but this time without the indicator
• crystallise and dry the crystals of salt from the reaction mixture as described previously

Question 10

Acid + carbonate —>

Answer 10

A salt + water + carbon dioxide

Question 11

Give the word equation for when calcium carbonate reacts with hydrochloric acid

Answer 11

Calcium carbonate + hydrochloric acid —> calcium chloride + water + carbon dioxide