At 298 K, the vapour pressure of an ideal solution containing 1 mol of liquid ( L 1 ) and 2 mol of liquid ( L 2 ) is 500 mm Hg. When 2 mol of ( L 1 ) is added to this solution, the vapour pressure of the solution increases by (5 % ). What are the respective vapour pressures (in ( mm H g )) of ( L 1 ) and ( L 2 ) in their pure states at 298 K ?