The activation energies of the forward and backward reactions in the case of a chemical reaction are 30.5 and 45.4kJ/mol respectively. The reaction is:

Explanation

To determine whether the given reaction is exothermic or endothermic based on the activation energies of the forward and backward reactions, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Given Values**:
- Activation energy of the forward reaction (Ea, forward) = 30.5 kJ/mol
- Activation energy of the backward reaction (Ea, backward) = 45.4 kJ/mol

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