NEET Exam Model Paper 9

Question : 145 of 180

Marks: +1, -0

How many grams of sucrose (molar mass =342gmol−1 should be dissolved in 100 g water in order to produce a solution with 104.74°C as, the difference between the b.p. and freezing point temperatures ?(Kf=1.86,Kb=0.51)