**Reaction between Sulphuric Acid and Ammonium Sulphate**

**Introduction:**
Sulphuric acid (H2SO4) is a strong acid, commonly used in various industrial processes. Ammonium sulphate ((NH4)2SO4) is a white crystalline solid commonly used as a fertilizer. When these two substances come into contact, a chemical reaction occurs, resulting in the formation of new compounds.

**Chemical Equation:**
The reaction between sulphuric acid and ammonium sulphate can be represented by the following balanced chemical equation:

H2SO4 + (NH4)2SO4 → 2NH4HSO4

**Explanation:**

1. **Formation of Ammonium Hydrogen Sulphate (NH4HSO4):**
The initial reaction involves the displacement of one hydrogen atom from sulphuric acid by an ammonium ion from ammonium sulphate. This leads to the formation of ammonium hydrogen sulphate (NH4HSO4) as an intermediate product.

H2SO4 + NH4+ → NH4HSO4 + H+

2. **Formation of Water (H2O):**
The ammonium hydrogen sulphate further reacts with another molecule of sulphuric acid, resulting in the release of a water molecule.

NH4HSO4 + H2SO4 → (NH4)2SO4 + H2O

3. **Formation of Ammonium Sulphate ((NH4)2SO4):**
The final product of the reaction is ammonium sulphate. It is formed by the combination of the ammonium ion from ammonium hydrogen sulphate and the sulphate ion from sulphuric acid.

NH4HSO4 + H2SO4 → (NH4)2SO4 + H2O

**Conclusion:**
In summary, when sulphuric acid reacts with ammonium sulphate, ammonium hydrogen sulphate is initially formed. This intermediate compound then reacts with more sulphuric acid to produce water and ammonium sulphate as the final products. The reaction can be represented by the balanced chemical equation H2SO4 + (NH4)2SO4 → 2NH4HSO4, followed by NH4HSO4 + H2SO4 → (NH4)2SO4 + H2O.

Ammonia reacts with sulfuric acid to produce ammonium sulfate and water. ... So neutralisation reaction happens and salt will be formed.