The boiling point of a solution increases directly as a function of the number of moles of solute present in a given mass of solution. This relationship is expressed mathematically by the following equation.

Question

ΔTb = Kb·m

ΔTb is the boiling-point elevation of a solution, m is the molality of solute particles in solution, and Kb is the molal boiling-point-elevation constant.

Determine the number of moles of sucrose present in a 11.70 g sample of water that has a boiling point of 102.89°C. The boiling point for pure water is 100.00°C and the molal boiling-point-elevation constant for water is 0.51°C/m

Answer 1

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