Henrys Law and Dilute Nonelectrolyte Solutions

At 318.15 K, acetone (component 1) has a negative deviation from Raoult s law in a solution with nitromethane (component 2), and nitromethane has a positive deviation from Raonlt s law over part of the range of compositions. What conclusions can you draw about 1 -1, 1-2, and 2-2 molecnlar interactions  

Henry s law is named for William Henry, 1774-1836, an English chemist who was a friend and colleague of John Dalton and who influenced Dalton s formulation of his atomic theory. 

At 40°C, a solution of ethanol (component 2) in benzene (component 1) having a mole fraction of ethanol equal to 0.0200 has a partial vapor pressure of ethanol equal to 30.2 torr. Assuming that Henry s law holds at this composition, find the value of the Henry s law constant for ethanol in benzene. 

Find the value of the Henry s law constant for benzene in ethanol at 40°C. The partial vapor pressure of benzene is equal to 12.8 torr if the mole fraction of benzene is equal to 0.0130. 

Physical chemists always want to write a single equation that applies to as many different cases as possible. We would like to write equations similar to Eq. (6.1-8) for the chemical potential of every component of every solution. Consider a dilute solution in which the solvent and the solute are volatile. We equilibrate the solution with a vapor phase, which we assume to be an ideal gas mixture. Using Henry s law, Eq. (6.2-1), for the partial vapor pressure of substance number i (a solute) and using the fundamental fact of phase equilibrium  

---