In a constant volume process for a closed system, the internal energy change of the system depends on the heat exchanged.
举一反三
- In a constant pressure process for a closed system, the internal energy change of the system is equal to the sum of the heat exchanged and the work.
- In a constant pressure process for a closed system, the enthalpy change of the system depends on the heat exchanged.
- In an isochoric (等容) process, all the energy added as heat remains in the system as an increase in internal energy.
- Which of the following phenomena belongs to an adiabatic process ?() A: The temperature of the system remains unchanged B: The system does not absorb heat from the environment C: No heat exchange between the system and the environment D: The internal energy of the system remains unchanged
- The system is expanded from equilibrium state a to equilibrium state b in the process of I, absorbing 500J of heat, working externally 400J; Then it is compressed to the original state a in the process of II, releasing heat 300J outward. Then, in the process of II, the change of the internal energy is[img=178x135]17e0b762b3b1660.png[/img] A: -100J B: 100J C: 200J D: -200J