A cylinder containing an ideal gas (0.1 mol of 1.0dm3 ) 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 If the stoppers S1  and S2 (as shown in the figure) are suddenly withdrawn, the volume of the gas in litres equilibrium is achieved will be________ ( Given, Kfwater=2.0 K kg mol−1R=0.08 dm3atm K−1mol−1)