Preparation of Salts | Class 10 ICSE Chemistry

Method	Reactants	Products (Salt type)	Example
Neutralization	Acid + Alkali (soluble base)	Soluble Salt + Water	HCl + NaOH → NaCl + H₂O
Precipitation	Soluble Salt A + Soluble Salt B	Insoluble Salt + Soluble Salt	AgNO₃ + NaCl → AgCl↓ + NaNO₃
Direct Combination	Metal + Non-metal	Soluble/Insoluble Salt	Fe + S → FeS (heat)

Think about the target salt and the method chosen for it.

Is the salt you are preparing soluble in water? Will a precipitate form during the reaction? Why is this method suited to the salt?

Lock a prediction to enable the reaction.

Neutralisation: dilute HCl and NaOH are corrosive — wear goggles, add acid slowly, and rinse spills with water.
Precipitation: silver nitrate (AgNO₃) is toxic and stains skin/clothes black — handle with care and avoid contact.
Direct combination: heating iron + sulphur is strongly exothermic once started — heat gently, work in a fume cupboard, and beware toxic SO₂ from excess sulphur.
Dispose of silver and heavy-metal residues in the labelled waste container, not down the sink.

HCl + NaOH → NaCl + H₂O

Lab Journal

Select a method to start...