Write a balanced chemical equation with the help of chemical symbols and formulas for the following reactions:

(i) Zinc + Silver nitrate $⟶$ Zinc nitrate + Silver

(ii) Copper oxide + Hydrogen $⟶$ Copper + Water

(iii) Barium chloride + Aluminium sulphate $⟶$ Barium sulphate + Aluminium chloride

Q.

Write the balanced chemical equations for the following reactions.
(A) Calcium hydroxide + Carbon dioxide → Calcium carbonate + water
(B) Zinc + Silver nitrate → Zinc nitrate + Silver
(C) Aluminium + copper chloride → Aluminium chloride + Copper
(D) Barium chloride + Potassium sulphate → Barium sulphate + Potassium chloride.

Q.

Write the chemical formula for the following compounds

a) Aluminium sulphate

b) Silver nitrate

c) Magnesium oxide

d) Barium chloride

Q. Given below are word equations. Convert them into chemical equations using symbols and valencies. Balance the equations. Use appropriate signs for gases and precipitates in the reaction.
i) Zinc Sulphide $+$ Oxygen gas $\to$ Zinc oxide solid $+$ Sulphur dioxide gas
ii) Silver nitrate solution $+$ Sodium chloride solution $\to$ Silver chloride precipitate $+$ Sodium nitrate solution
iii) Sulphur solid $+$ Concentrated nitric acid $\to$ Sulphuric acid $+$ Nitrogen dioxide gas $+$ Water
iv) Barium chloride Solution $+$ Potassium sulphate Solution $\to$ Barium sulphate Precipitate $+$ Potassium chloride solution
v) Silver nitrate on heating$\to$ silver metal $+$ nitrogen dioxide gas $+$ Oxygen gas.
vi) Aluminium hydroxide $+$ Nitric acid $\to$ Aluminium nitrate $+$ Water.

Q.

Write the balanced chemical equations of the following reactions.

(a) Sodium hydroxide + sulphuric acid $\to$ sodium sulphate + water

(b) Potassium bicarbonate + sulphuric acid $\to$ potassium sulphate + carbon dioxide + water

(c) Iron + sulphuric acid $\to$ ferrous sulphate + hydrogen.

(d) Chlorine + sulphur dioxide + water $\to$ sulphuric acid + hydrogen chloride

(e) Silver nitrate $\to$ silver + nitrogen dioxide + oxygen

(f) Copper + nitric acid $\to$ copper nitrate + nitric oxide + water

(g) Ammonia + oxygen $\to$ nitric oxide + water

(h) Barium chloride + sulphuric acid $\to$ barium sulphate + hydrochloric acid

(i) Zinc sulphide + oxygen $\to$ zinc oxide + sulphur dioxide

(j) Aluminium carbide + water $\to$ aluminium hydroxide + methane

(k) Iron pyrites ($Fe{S}_2$) + oxygen $\to$ ferric oxide + sulphur dioxide

(l) Potassium permanganate + hydrochloric acid $\to$ potassium chloride + manganese chloride + chlorine + water

(m) Aluminium sulphate + sodium hydroxide $\to$ sodium sulphate + sodium meta aluminate + water.

(n) Aluminium + sodium hydroxide + water $\to$ sodium meta aluminate + hydrogen

(o) Potassium dichromate + sulphuric acid $\to$ potassium chloride + chromium chloride + water + chlorine.

(p) Sulphur + nitric acid $\to$ sulphuric acid + nitrogen dioxide + water.

(q) Sodium chloride + manganese dioxide + sulphuric acid $\to$ sodium hydrogen sulphate + manganese sulphate + water + chlorine.