CHEM 1250 Study Guide - Quiz Guide: Electrolyte, Rate Equation, Torr

• School: Ohio State University
• Department: Chemistry
• Course: CHEM 1250
• Professor: All

Document Summary

1. (8 pts) a solution is made by dissolving 35. 5 g of anthracene, c14h10 (a nonvolatile nonelectrolyte), in. 150. 0 g of benzene, c6h6, at 20oc. (the vapor pressure of pure benzene, c6h6, is 75 torr at 20oc. ) (mol. Calculate the vapor pressure and vapor pressure lowering of the solution. Vapor pressure of a volatile substance is given by raoult"s law and the vapor pressure lowering due to a nonvolatile solute can be derived from this. Oa = mole fraction of solvent (c6h6) in the solution. Pa = vapor pressure due to the solvent. This is also the vapor pressure of the solution since the solvent is the only thing contributing to the vapor pressure of the solution when the solute is nonvolatile. For a nonvolatile solute the vapor pressure lowering due to addition of solute, )p, is given by: Ob = mole fraction of solute in the solution.