Name the method used for the preparation of the following salts from the list given below –

(i) Sodium nitrate

(ii) Iron (III) chloride

(iii) Lead chloride

(iv) Zinc sulphate

(v) Sodium hydrogen sulphate.

List:

A : Simple displacement
B : Neutralization
C : Decomposition by acid
D : Double decomposition
E : Direct synthesis

Define the following terms — Neutralization

Salt S is prepared by reacting dilute sulphuric acid with copper oxide. Identify S.

From the substances given in the list below, write the equations for the reactions by which you could obtain the compounds given ahead :

1. hydrogen,
2. sulphur dioxide,
3. carbon dioxide,
4. zinc carbonate (two steps required).