Sample Activity of Integration – Salts Revision Questions

1. Explain the following, with the aid of examples:

a) Neutralization.

 b)  Titration.

Soluble salt.

d) Insoluble salt.

2. What is meant by the following terms?

 a) Salt.

b) Crystallization.

c) Neutralization.

d) Precipitation.

 e) Solubility.

3.Differentiate between acid salt and normal salt. In each case, give an example.

4.Name the salts formed from the following reactions:

1. Zinc oxide and warm dilute nitric acid.
2. Silver nitrate solution and sodium chloride solution
3. Ammonium hydroxide solution and dilute sulphuric acid.

5.Potassium hydrogensulphate is described as an acid salt.

a)Write the chemical formula of potassium hydrogen sulphate.

b) Name the acid and the alkali that can be used to prepare potassium hydrogen sulphate.

c) Why do you think the potassium hydrogen sulphate is described as?

 (i) as a salt?

(ii) as an acid?

6. Explain why both hydrochloric acid and nitric acid cannot form acid salts.

7. Sodium hydroxide reacts with nitric acid to form the salt sodium nitrate.

a)Write a:

i) Word equation for this reaction.

(ii) balanced equation for this reaction.

b) What type of reaction is this?

8. The following are chemical names of some salts: sodium hydrogenphosphate, ammonium sulphate, aluminium nitrate, silver chloride, ammonium carbonate, potassium phosphate and copper (II) carbonate.

 b) Identify the salt (s) that is (are):

(i) soluble in water.

(ii) insoluble.

(I ii) can be prepared by the titration method.

(iv) can be prepared by precipitation method.

 (v) described as an acid salt.

(vi) described as a neutral salt.

c) Name two substances which when reacted together can form:

(i) copper (II) carbonate.

 (ii) aluminium nitrate.

9.Sulphuric acid solution can be neutralized using an alkali such as sodium hydroxide or adding a solid oxide such as copper (II) oxide.

a) Write a balanced equation for the reaction between:

(i) sodium hydroxide and sulphuric acid.

(ii) copper (II) oxide and sulphuric acid.

 b) In the preparation of hydrated copper sulphate (II) crystals, an excess of copper (II) oxide was added to warm dilute sulphuric acid. The excess copper (II) oxide was removed by filtration. Describe how you would obtain pure dry crystals of hydrated copper (II) sulphate from the filtrate collected.