Question

Write the skeleton equation for the following word equation and then balance them.

1. Carbon + Oxygen → Carbon dioxide.
2. Phosphorus + Chlorine → Phosphorus pentachloride.
3. Sulphur + Oxygen → Sulphur dioxide.
4. Magnesium + hydrogen → Magnesium + Hydrogen chloride chloride.

Answer 1

• Balanced equation:

1. C + O₂ → CO₂
2. P₄ + 10 Cl₂ → 4PCl₅
3. S + O₂ → SO₂
4. Mg + 2HCl → MgCl₂ + H₂

• Skeleton equation:

1. C + O₂ → CO₂
2. P + Cl₂ → PCl₅
3. S + O₂ → SO₂
4. Mg + 2HCl → MgCl₂ + H₂