Spontaneous reactions are those which
Correct answer: A. continue to occur once started
- A. continue to occur once started
- B. require activation energy
- C. are endothermic
- D. are exothermic
Explanation
Spontaneous reactions are those that proceed without any external intervention once initiated. They occur naturally in the direction that leads to a decrease in Gibbs free energy (ΔG < 0) and an increase in entropy (ΔS > 0) for the system.
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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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