sort out the homogeneous and netrogeneous equilibrium from the following
` CaCO_3(s) hArr Cao (s) + CO_2(g)`

Explanation

To determine whether the given equilibrium reaction is homogeneous or heterogeneous, we can follow these steps:

### Step 1: Understand the Definitions
- **Homogeneous Equilibrium**: This occurs when all the reactants and products are in the same phase (all gases, all liquids, or all solids).
- **Heterogeneous Equilibrium**: This occurs when the reactants and products are in different phases.

### Step 2: Analyze the Given Reaction
The reaction provided is:
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