The vapor pressures of pure carbon disulfide and carbon tetrachloride are 360 and 99.8 Torr,respectively,at 296 K.What is the vapor pressure of a solution containing 50.0 g of each compound?

Question

Quizplus · Accepted Answer

The vapor pressure of the solution can be calculated using Raoult's Law. First, calculate the mole fraction of each component. For CS2 (molar mass = 76.14 g/mol) and CCl4 (molar mass = 153.82 g/mol), the moles are 0.657 and 0.325, respectively. The mole fractions are 0.669 for CS2 and 0.331 for CCl4. The vapor pressure is then (0.669 * 360 Torr) + (0.331 * 99.8 Torr) = 274 Torr.

The Vapor Pressures of Pure Carbon Disulfide and Carbon Tetrachloride