WAEC - Chemistry (2001 - No. 42)
A major factor considered in selecting a suitable method for preparing a simple salt is its
crystalline form
melting point
reactivity with dilute acids
solubility in water
解释
The major factor to consider when selecting a method for preparing a simple salt is the salt's solubility in water:
- Soluble in water: A salt can be prepared by titration.
- Insoluble in water: A salt can be prepared by precipitation. In this method, the insoluble salt is precipitated, washed, and dried.