Free Practice Tests
Methods of Preparation of Acids
There are several methods of preparation of acids.
These include the following:
1. By the reaction between an acidic oxide of a non-metal (acid anhydride) and water.
SO2(g) + H2O(l) → H2SO3(aq) Trioxosulphate(IV)
P4O10(s) + 2H2O(l)
2. Displacement of a weaker of more volatile acid from its salt by a stronger or less volatile acid.
NaCl(s) + H2SO4(aq) → NaHSO4(aq) + HCl(aq)
Na2B4O7(s) (Borax) + H2SO4(aq) + 5H2O(l)
→ Na2SO4(aq) + 4H3BO3(aq)
3. Displacement of insoluble sulphide from a metallic salt by hydrogen sulphide.
Pb(C2H3O2)2(aq) + H2S(g)
→ PbS(s) + 2CH3COOH(aq) (Ethanoic acid)
The Concepts of Acids and Bases
What is Basicity of Acids
How to Determine Strength of Acids
Properties of Acids
Uses of Acids
The Lewis Concept of Acids and Bases
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