In isothermal process?
Correct answer: C. temperature of the system remains constant
- A. No heat enter or leave the system
- B. Pressure of the system remains constant
- C. temperature of the system remains constant
- D. Volume of the system remains unchanged
Explanation
An isothermal process is defined by constant temperature, so the temperature of the system remains unchanged. Heat may still enter or leave the system to maintain that temperature during expansion or compression. Students often choose a by confusing an isothermal process with an adiabatic process.
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About System, Surroundings and State Functions
A system is the part of the universe under study, while everything outside it is the surroundings; the boundary separates them. State functions such as pressure, temperature, volume, internal energy and enthalpy depend only on the state, unlike heat and work, which depend on the path taken.
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