Which solution will have the highest boiling point? A)0.050 M KNO₃ B)0.075 M CaCl₂ C)0.025 M NH₄NO₃ D)0.020 M Na₃PO₄ E)0.10 M C₆H₁₂O₆

Question

Quizplus · Accepted Answer

Boiling point elevation is directly proportional to the molality (moles of solute per kg of solvent), and inversely proportional to the solvent's molal boiling point constant (which is a property of the solvent). CaCl2 will dissociate into three ions in water (Ca2+ and two Cl- ions) while the other choices only dissociate into two ions or less. Therefore, B has the highest molality, and it will have the highest boiling point.

Which Solution Will Have the Highest Boiling Point