57) At a particular temperature, the vapour pressures of two liquids A and B are respectively 120 and 180 mm of mercury.If 2 moles of A and 3 moles of B are mixed to form an idealsolution, the vapour pressure of the solution at the sametemperature will be (in mm of mercury)a) 156 b) 145 c) 150 d) 108

57) At a particular temperature, the vapour pressures of two liquids

1.	57) At a particular temperature, the vapour pressures of two liquids A and B are respectively 120 and 180 mm of mercury.If 2 moles of A and 3 moles of B are mixed to form an idealsolution, the vapour pressure of the solution at the sametemperature will be (in mm of mercury)a) 156 b) 145 c) 150 d) 108
Answer» YOUR ANS.ACC. TO Raoult LAW FOR LIQUID - LIQUID:-THE TOTAL PRESSURE OF SOLU:-P = partial pressure of A+ partial pressure of Bpartial pressure of A = p°A(MOLE frac. of A)= 120(2/5 ) = 48mm of hgpartial pressure of B = 108mmof hgso, total pressure p = 108+48 = 156mm of mercury.hope it hepls ⭐⭐follow me.