You have been given a solution containing chloroform and toluene, the concentration of chloroform is specified as 40 mole percent , toluene 60 mole percent. what is the mass percentage of chloroform in this solution ?
in 1 mole of mixture 0.4 mole of chloroform (CHCl3), mass =0.4*119.5=47.8g chloroform 0.6 mole toluene C7H8, mass =0.6*92=55.2 g toluene mass of solution 47.8+55.2=103 g mass% of chloroform=(47.8/103)*100%=46.4% mass%of toluene=(55.2/103)*100%=53.59%
