An exothermic reaction is spontaneous at all temperature. What is the sign of S?

Explanation

To determine the sign of entropy (ΔS) for an exothermic reaction that is spontaneous at all temperatures, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Relationship**: Recall the Gibbs free energy equation:
\[ \Delta G = \Delta H - T \Delta S \]
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