Energy for endothermic reaction comes from:
Correct answer: B. Surroundings
- A. System
- B. Surroundings
- C. Boundary
- D. Universe
Explanation
Endothermic reactions are the ones that need the energy to proceed. This energy in the form of heat is absorbed from the surroundings.
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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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Bond energy is also called bond enthalpy that is the measure of enthalpy change at: