Question

2. Temporary hardness
Classify each of the following reactions as combination, decomposition,
displacement or double displacement:
(i) 2Al + Fe2O3 → Al2O3 + 2Fe
(ii) 2KCIO3 → 2KCl + 302
(iii) BaCl2 + Na2SO4 → BaSO4 + 2NaCl
(iv) CaO + H2O + Ca(OH)2​

Answer 1

Answer:

1. Displacement Reaction

2. Decomposition Reaction

3. Double Displacement Reaction

4. Combination Reaction

Answer 2

Answer:

1. displacement
2. decomposition
3. double displacement
4. combination