A stainless steel chamber contains Ar gas at a temperature T and pressure P. The total number of Ar atoms in the chamber is n. Now Ar gas in the chamber is rep,aced by CO_(2) gas and the total number of CO_(2) molecules in the chamber is n//2 at the same temperature T. The pressure in the chamber now is P'. Which one of the following relations relations holds true ? (Both the gases behave as ideal gases)

A stainless steel chamber contains Ar gas at a temperature T and press

1.	A stainless steel chamber contains Ar gas at a temperature T and pressure P. The total number of Ar atoms in the chamber is n. Now Ar gas in the chamber is rep,aced by CO_(2) gas and the total number of CO_(2) molecules in the chamber is n//2 at the same temperature T. The pressure in the chamber now is P'. Which one of the following relations relations holds true ? (Both the gases behave as ideal gases)
Answer» P'=P P'=2P `P'=P//2` `P' P//4` SOLUTION : The increasein PRESSUREIS causedby the numberofparticleshittingagainst the WALLSOF thecontainer.Sincenumber ofmoleculesisreducedtohalfhencethepressurewillalsobe decreased accordinglyas pertheformula PV = nRThence ` P=P//2`