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# How many grams of sucrose (M.wt. = 342)should be dissolved in 100g water in order to produce a solution with 105.0$^{\large\circ}$C difference between the freezing point and the boiling point? ($K_f = 1.86^{\large\circ}$C/m, $K_b = 0.51^{\large\circ}$C/m)

72g
Hence (A) is the correct answer.