4.0 L of an ideal gas is allowed to expand isothermally into vacuum until the total volume is 20 L. The amount of heat absorbed in this expansion is ______ L atm.
← JEE Main 2022 · 28 Jun · Shift 1
ChemistryInteger+4 / -1Question 84 of 90
JEE Main 2022 · 28 Jun · Shift 1, Chemistry question 84
Answer and worked solution
Official answer: 0
Free expansion. No work is done against vacuum, and for an ideal gas at constant temperature , so .
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Topics:First law and enthalpy