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Question: Answered & Verified by Expert
A pistion filled with 0.04 mol of an ideal gas expands reversibly from 50 mL to 375 mL at a constant temperature of 37°C . As it does so, it absorbs 208 J of heat. The values of q and w of the process will be
R=8.314 Jmol -1 K -1 In7.5=2.01
ChemistryThermodynamics (C)NEET
Options:
  • A q=+208J,w=-208J
  • B q=+208J,w=+208J
  • C q=-208J,w=+208J
  • D q=-208J,w=-208J
Solution:
2847 Upvotes Verified Answer
The correct answer is: q=+208J,w=-208J
The process is isothermal expansion, so
q=-w {Δu=0}
Since, q=+208J
w=208J (expansion work)

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