Verified Solution • 2025–26 Session moderate

QJEEM22Ch4927: JEE Main 2022 Chemistry - Class 11 JEEM22Ch4927 Solution: 4.0 L of an ideal gas is allowed to expand isothermally into…

4.0 L of an ideal gas is allowed to expand isothermally into vacuum until the total volume is 2.0 L. The amount of heat absorbed in this expansion is ____________ L atm.

Step-by-Step Verified Solution

Work done =−Pext Δv=-P_{\text {ext }} \Delta \mathrm{v}

∵Pext =0 (vacuum) \because P_{\text {ext }}=0 \quad \text { (vacuum) }

∴w=0,ΔU=0\therefore w=0, \quad\Delta U=0 (as the process is isothermal)

So, q=0q=0

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