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CGP EDU Academic Team
Published on: August 14, 2026
2.0 L of N 2 gas kept at 25ºC and 5 atm pressure were expanded isothermally against a constant pressure of 1 atm until the pressure of the gas reaches 1 atm. Assuming ideal behavior, reversible work of expansion in this process (in J) is close to
Text Solution
Verified by ExpertsThe correct answer is:
D
w = –nRT ln 
= – (2 × 5) × 2.303 log 
= –16.121 lt atm
= –16.121 × 101.3 = –1633 J
w = –P ext (V 2 – V 1 )
= 
= 
= –2 × 5 × 
L atm
= –810 J
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