Chemistry · Thermochemistry
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Which one of the following is not an example of state function?
- A
Temperature (T)
- B
Volume (V)
- C
Enthalpy (E)
- D
Heat (q)
Heat is NOT a state function. Heat is the transfer of energy between a system and its surroundings due to a temperature difference. It depends on the process or path taken and is not solely determined by the initial and final states. The amount of heat exchanged can vary depending on the specific conditions and the path taken.
Temperature is a state function. It describes the average kinetic energy of the particles in a system and is independent of the path taken to reach that temperature. It only depends on the current state of the system.
Volume is a state function. It refers to the amount of space occupied by a substance and is independent of the process used to achieve that volume. Like temperature, it only depends on the current state of the system.
Enthalpy is a state function. It represents the total heat content of a system at constant pressure. It takes into account internal energy and the work done on or by the system. Enthalpy change (ΔH) is independent of the specific path and depends only on the initial and final states.
Heat is NOT a state function. Heat is the transfer of energy between a system and its surroundings due to a temperature difference. It depends on the process or path taken and is not solely determined by the initial and final states. The amount of heat exchanged can vary depending on the specific conditions and the path taken.
Tagged under Chemistry · Thermochemistry · 2021