Why can’t we prepare HBr by heating KBr with sulphuric acid ?

Explanation

To answer the question of why we cannot prepare HBr by heating KBr with sulfuric acid, we can break down the explanation into several steps:

### Step 1: Understanding the Reactants
- **KBr (Potassium Bromide)**: This is a salt that contains potassium ions (K⁺) and bromide ions (Br⁻).
- **Concentrated H₂SO₄ (Sulfuric Acid)**: This is a strong acid that can act as both an acid and an oxidizing agent.

### Step 2: The Reaction Process
When KBr is heated with concentrated sulfuric acid, one might expect that the sulfuric acid would protonate the bromide ions to form HBr. However, this is not the case.
...