The amount of heat evolved or absorbed at constant volume is equal to change in _ of system:
Correct answer: B. Internal energy
- A. Work done
- B. Internal energy
- C. Enthalpy
- D. State of system
Explanation
The amount of heat evolved or absorbed at constant volume is equal to change in internal energy of the system ∆E = qv.
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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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