Question

Determine the molality and mole fraction of sucrose if a solution is prepared by dissolving 100.6 g of table sugar (sucrose, C12H22O11) in 985 g of water

Answer 1

MolarityNo. of moles of solute / volume of solution in liter No. of moles of sucrose - (100.6 g) / (342.30 g/mol)0.29 moles density of water 1 g/mL So; volume of water- (985 g) / (1 g/mL)-985 mL-0.985 L Molarity of sucrose (0.29 mol) / (0.985 L)-0.3 M No. of moles of water (985 g) / (18.02 g/mol)- 54.7 mol Mole fraction of sucrose = (0.29 mol) / (0.29 mol + 54.7 mol) = 0.005