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JEE Main 20244 AprilEvening Shift
Exam
JEE Main
Year
2024
Date
4 April
Shift
Evening Shift
Subject
Chemistry
Chapter
Thermodynamics (C)

JEE Main 2024 · 4 April · Evening Shift · Chemistry · Thermodynamics (C)

Three moles of an ideal gas are compressed isothermally from (60 ~L...

Three moles of an ideal gas are compressed isothermally from (60  L\mathrm{~L}) to (20  L\mathrm{~L}) using constant pressure of (5  atm\mathrm{~atm}). Heat exchange (Q\mathrm{Q}) for the compression is - ______ Lit. atm.

Correct answer

0

Step-by-step solution

As isothermal ΔU=0\Delta \mathrm{U}=0 and process is irreversible Q=−W=−[−Pext (V2−V1)]Q=5(20−60)=−200atm−L\begin{aligned} & \mathrm{Q}=-\mathrm{W}=-\left[-\mathrm{P}_{\text{ext }}\left(\mathrm{V}_2-\mathrm{V}_1\right)\right] \\ & \mathrm{Q}=5(20-60)=-200 \mathrm{ atm}-\mathrm{L} \end{aligned}
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