Methods of Preparation of Acids

Home | 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) → 4HPO3(aq) Trioxophosphate(V)

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) (trioxoborate(III) acid)

3. Displacement of insoluble sulphide from a metallic salt by hydrogen sulphide.

Pb(C2H3O2)2(aq) + H2S(g) → PbS(s) + 2CH3COOH(aq) (Ethanoic acid)

Related Tutorials

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

Like This Post? Please Share!!






Copyright 2017, All Rights Reserved Free Chemistry Online | About Us | Usage of Content | Total Disclosures | Privacy Policy