Verified Solution • 2025–26 Session
moderate
QJEEM20Che670: JEE Main 2020 Chemistry - Class 12 JEEM20Che670 Solution: A cylinder containing an ideal gas (0.1 mol of 1.0 dm 3 ) is in …
A cylinder containing an ideal gas (0.1 mol of 1.0 dm3) is in thermal equilibrium with a large volume of 0.5 molal aqueous solution of ethylene glycol at its freezing point. If the stoppers S1 and S2 (as shown in the figure) are suddenly withdrawn, the volume of the gas in litres after equilibrium is achieved will be____.
(Given, Kf (water) = 2.0 K kg mol–1,
R = 0.08 dm3 atm K–1 mol–1)
(Given, Kf (water) = 2.0 K kg mol–1,
R = 0.08 dm3 atm K–1 mol–1)
Step-by-Step Verified Solution
For aqueous solution
Tf = Kf.m = 2 × 0.5
Temperature of solution = –1°C = 272 K
Final volume of ideal gas =
=
= 2.18 L
Tf = Kf.m = 2 × 0.5
Temperature of solution = –1°C = 272 K
Final volume of ideal gas =
=
= 2.18 L