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Question: Answered & Verified by Expert
In the context of pressure-volume work, what does the external pressure (pex) represent?
ChemistryThermodynamics (C)NEET
Options:
  • A The pressure of the gas inside the cylinder
  • B The pressure exerted by the piston
  • C The pressure of the surroundings
  • D The pressure of the system
Solution:
1218 Upvotes Verified Answer
The correct answer is: The pressure of the surroundings
In pressure-volume work, the external pressure (pex) represents the pressure of the surroundings that acts on the system.

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