Which of the following will have the smallest boiling point elevation? Key Concept: Henry's law states that the solubility of a gas in a liquid is directly proportional to the partial pressure of that gas above the solution, Sgas = kH*Pgas. Solution: The easiest way to understand this is to solve use the given solubility and pressure to determine Henry's constant. Then use it with the equation and the given partial pressure of the unknown to determine its solubility. It is easier to take the ratio of the solubilities and set them equal to the ratio of the pressures and solve for the unknown.

0.2576 m KCl

0.2576 m NaF

0.2576 m glucose

0.2576 m KBr