Pls solve Q55. The vapour pressure of water at room temperature is 23.8 mm of Hg. The vapour pressure of an aqueous solution of sucrose with mole fraction 0.1 is equal to : (1) 23.9 mm Hg (2) 24.2 mm Hg (3) 21.42 mm Hg (4) 31.44 mm Hg Share with your friends Share 1 Vartika Jain answered this Dear Student, We know that, P°-PSP°= X2or, PS = P°(1-X2)or, PS=23.8 (1-0.1) =23.8(0.9) =21.42 mm of HgHence, correct answer is (3) -3 View Full Answer