The only thing which can predict that if the reaction will be spontaneous or nonspontaneous is:
Correct answer: B. Free energy of the system
- A. Enthalpy change
- B. Free energy of the system
- C. Energy Change
- D. Temperature Change
Explanation
Free energy of the system also known as the Gibbs free energy determines if the reaction is spontaneous or not. The formula for Gibss free reaction = enthalpy change- T(entropy change).If Gibbs free reaction is 0 or less, then the reaction is spontaneous.
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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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