Enthalpy is the sum of internal energy and:
Correct answer: A. Work done
- A. Work done
- B. Entropy
- C. Potential energy
- D. Kinetic energy
Explanation
The correct option is A) Work done. Enthalpy is the sum of internal energy and the work done on or by the system. It represents the total heat content of a system and is often used to describe the energy changes in chemical reactions and physical processes. Work can be done on a system or by a system, and it is one of the components that contributes to the enthalpy change in a process.
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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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