At 28.0°C, the vapor pressure of npropyl mercaptan, C₃H₇SH, is 175 torr, while that of acetonitrile, CH₃CN, is 102 torr. What is the vapor pressure, at 28.0°C, of a solution made by mixing 120.0 g of C₃H₇SH and 80.0 g CH₃CN, if Raoult's Law is obeyed?Hint: Organizing the given information into moles and mole fraction of each component will help in solving this problem.

Question

Quizplus · Accepted Answer

To find the vapor pressure of the solution, use Raoult's Law: P_solution = X_A * P_A + X_B * P_B. Calculate moles of each component, find mole fractions, and apply Raoult's Law. The result is approximately 135 torr.

At 280°C, the Vapor Pressure of Npropyl Mercaptan, C3H7SH, Is 175

At 280°C, the Vapor Pressure of Npropyl Mercaptan, C₃H₇SH, Is 175