Sulphuric acid can be used In the laboratory to prepare the following substances :
(a) Hydrogen (b) Carbon dioxide
(c) Carbon monoxide (d) Sulphur dioxide
(e) Hydrogen chloride (f) Hydrogen sulphide
(g) Nitric acid.
1. Derive a balanced equation for each of the shove preparation.
2. In which of the reactions would you use (give numbers only): (i) Dilute Sulphuric acid, (ii) Sulphuric acid.
3. State the chemical property of sulphuric acid illustrated in each of these reactions.

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Solution

Option a: 2 Marks
Option b: 2 Marks
Option c: 1 Mark

1. (a) $Z n + H_{2} S O_{4} (d i l .) \to Z n S O_{4} + H_{2} ↑$
(b) $C a C O_{3} + H_{2} S O_{4} (d i l .) \to C a S O_{4} + H_{2} O + C O_{2} ↑$
(c) $H C O O H C o n c . H_{2} S O_{4} - ------- \to C O + H_{2} O$
(d) $N a_{2} S O_{3} + H_{2} S O_{4} (d i l .) \to N a_{2} S O_{4} + H_{2} O + S O_{2} ↑$
(e) $2 N a C l + H_{2} S O_{4} (c o n c .) h e a t - - \to N a_{2} S O_{4} + 2 H C l$
(f) $F e S + H_{2} S O_{4} (d i l .) \to F e S O_{4} + H_{2} S ↑$
(g) $K N O_{3} + H_{2} S O_{4} (c o n c .) Δ - --- \to < 200^{\circ} C K H S O_{4} + H N O_{3}$

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Similar questions

Sulphuric acid can be used to prepare a number of gases in the laboratory. Write balanced equations for the reactions from which the following gases are obtained, using dilute sulphuric acid as one of the reactants:
(i) Hydrogen
(ii) Carbon dioxide
(iii) Sulphur dioxide

Copy and complete the following table. Column 3 has the names of gases to be prepared using the substance you enter in Column 1, alongwith dilute or concentrated sulphuric acid, as indicated in Column 2.

Column 1	Column 2	Column 3
Substance reacted with acid	Dilute or concentrated sulphuric acid	Gas
		hydrogen
		carbon dioxide
		only chlorine

Write the equation for the laboratory preparation of:
(i) Sodium sulphate using dilute sulphuric acid.
(ii) Lead sulphate using dilute sulphuric acid.

(a) Name the chemicals required for the preparation of carbon dioxide in the laboratory.

(b) How will you collect the gas?

(d) Why is sulphuric acid not used for the preparation of carbon dioxide in the laboratory?

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

(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 ( $F e S_{2}$ ) + 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.

Q. (a) Write the balanced equations for the preparation of the following compounds (as the major product), starting from iron and using only one other substance:
(i) iron (II) chloride
(ii) iron (III) chloride
(iii) iron (II) sulphate
(iv) iron (II) sulphide
(b) Write the equations for the laboratory preparation of
(i) sodium sulphate using dilute sulphuric acid.
(ii) lead sulphate using dilute sulphuric acid.

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