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Standard XII

Chemistry

Preparation of Carboxylic Acids

Write the bal...

Question

Write the balanced chemical equation for the following reaction
1. Hydrogen + Oxygen ------ Water.
2. Hydrogen + Chlorine -------- Hydrochloric acid,
3. Aluminium + Oxygen ----------- Aluminium Oxide

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Solution

1) 2H₂+ O₂ $\to$ 2H₂O
2) H₂+ Cl₂ $\to$ 2HCl
3) 4Al + 3O₂ $\to$ 2Al₂O₃

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Similar questions

Write the balanced equation for the following chemical reactions.

(i) Hydrogen + Chlorine → Hydrogen chloride

(ii) Barium chloride + Aluminium sulphate → Barium sulphate +

Aluminium chloride

(iii) Sodium + Water → Sodium hydroxide + Hydrogen

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. 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

(a) What is a balanced chemical equation ? Why should chemical equations be balanced ?

(b) Aluminium burns is chlorine to form aluminium chloride $(A l C l_{3})$ . Write a balanced chemical equation for this reation.

(c) Potassium metal reacts with water to give potassium hydroxide and hydrogen gas. Write a balanced chemical equation for this reaction.

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Write the balanced chemical equation for the following reaction 1. Hydrogen + Oxygen ------ Water. 2. Hydrogen + Chlorine -------- Hydrochloric acid, 3. Aluminium + Oxygen ----------- Aluminium Oxide

1) 2H2 + O2 → 2H2O 2) H2 + Cl2 →2HCl 3) 4Al + 3O2 →2Al2O3

Write the balanced chemical equation for the following reaction
1. Hydrogen + Oxygen ------ Water.
2. Hydrogen + Chlorine -------- Hydrochloric acid,
3. Aluminium + Oxygen ----------- Aluminium Oxide

1) 2H₂+ O₂ $\to$ 2H₂O
2) H₂+ Cl₂ $\to$ 2HCl
3) 4Al + 3O₂ $\to$ 2Al₂O₃