Which of the following reactions involve homogenous and which involve hetrogenous equilibria?
a) `2N_(2)O(g) ltimplies 2N_(2)(g) + O_(2)(g)`
b) `2NH_(3)(g) ltimplies N_(2)(g) + 3H_(2)(g)`
c) `2Cu(NO_(3))_(2)(s) ltimplies 2CuO(s) + 4NO_(2)(g) + O_(2)(g)`
d) `CH_(3)COOC_(2)H_(5)(aq) + H_(2)O(l) ltimplies CH_(3)COOH(aq) + C_(2)H_(5)OH(aq)`
e) `Fe^(3+) (aq) + 3OH^(-)(aq) ltimplies Fe(OH)_(3)(s)`.

Explanation

To determine which reactions involve homogeneous equilibria and which involve heterogeneous equilibria, we need to analyze the phases of the reactants and products in each reaction.

### Step-by-Step Solution:

1. **Identify the Phases of Each Reaction:**
- **a)** `2N₂O(g) ⇌ 2N₂(g) + O₂(g)`
- All species are gases.
- **b)** `2NH₃(g) ⇌ N₂(g) + 3H₂(g)`
...