Which of the following properties give description of system:
Correct answer: B. Temperature, Pressure & Volume.
- A. Composition of the system.
- B. Temperature, Pressure & Volume.
- C. Refractive Index and specific heat.
- D. All of the above properties taken together.
Explanation
The correct answer is Option B: Temperature, Pressure & Volume. In thermodynamics, the state of a system is described by state variables such as temperature, pressure, and volume. These variables are essential in defining the physical state of the system. Option A, Composition, refers to the substances present but not to the state of the system. Option C, Refractive Index and specific heat, are properties related to material characteristics and not directly to the state of a thermodynamic system. Option D is incorrect because it suggests that all the listed properties together describe the system, which is not the case.
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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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