A reaction has an enthalpy change of +40 kJ mol-1 and an entropy change of +120 J K-1 mol-1. At what temperature does it become feasible?
Answer and explanation
Correct answer: B. Above 333 K
- Step 1: Feasible when . Step 2. Convert: J mol-1. Step 3. K. Answer: Above 333 K. Why not the others: 0.333 K arises from not converting kJ to J; below 333 K, delta G would be positive; with a positive enthalpy change it is not feasible at all temperatures.
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