If temperature remains constant during each stage of the process, then it is called a/an:
Correct answer: A. Isothermal process.
- A. Isothermal process.
- B. Equilibrium process.
- C. Physical process.
- D. Chemical process.
Explanation
The correct answer is the 'Isothermal process'. In thermodynamics, an isothermal process is one in which the temperature of the system remains constant. This typically requires the system to be in contact with an external heat reservoir. The other options are incorrect because they either do not relate to temperature constancy ('Equilibrium process' and 'Physical process') or involve reactions that may change temperature ('Chemical 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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