A reaction has values of delta H and Delta S which are both positive. The reaction
Correct answer: B. Spontaneity is temperature dependent.
- A. Is spontaneous.
- B. Spontaneity is temperature dependent.
- C. Has an increasing free energy
- D. Is non-spontaneous
Explanation
Explanation: Whether the reaction is spontaneous or not depends on the temperature, as it influences the sign of delta G through the equation delta G = delta H - T * delta S.
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About Thermochemistry and Energetics of Chemical Reactions
Thermochemistry measures energy changes in chemical reactions and distinguishes exothermic from endothermic processes. Work covers systems, surroundings and state functions, internal energy, the first law of thermodynamics, enthalpy and Hess's law, including the sign conventions used when heat enters or leaves a system.
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