A certain vessel X has water and nitrogen gas at a total pressure of 2 atm at 300 K. All the contents of the vessel are transferred to another vessel Y having half the capacity of the vessel X. The pressure of N2 in this vessel was 3.8 atm at 300 K. The vessel Y is heated to 320 K and the total pressure observed was 4.32 atm. The pressure of water vapor at 320 K is :
[Assume that the volume occupied by the gases in the vessel is equal to the volume of the vessel.]