Homework Help: Chemistry

Posted by Sara on Sunday, March 7, 2010 at 9:22pm.

A solution of NaCl in water has a vapor pressure of 18.1 torr at 25 degrees C. What is the mole fraction of NaCl solute particles in this solution? What is vapor pressure at 45 degrees C? Vapor pressure of pure water is 23.8 torr at 25C and 71.9 torr at 45C, assume ions are Na+ and Cl-.

Chemistry - DrBob222, Sunday, March 7, 2010 at 9:38pm
This is really two problems in one but it's the same principle as the CH2Cl2 and CH2Br2 EXCEPT it's a little simpler since NaCl is not volatile. It's a non-volatile solute BUT it ionizes into two particles instead of one. You give it a whirl and post your calculations if you come up dry.
Chemistry - Sara, Sunday, March 7, 2010 at 10:01pm
No luck with me too. I'm drawing a blank since they don't give you moles or grams to work with. Thank you for all your help!!!

Answer this Question

Related Questions

Chemistry!!!~!! - A solution of sodium chloride in water has a vapor pressure of...
Chem again sorry - A solution of sodium chloride in water has a vapor pressure ...
Chemistry - Calculate the vapor pressure of a solution of 33.0 g of gylcerol (...
chemistry - vapor pressure - the vapor pressure of pure water at 25C is 23.8 ...
chemistry - determine the vapor pressure of a solution at 55 degrees C that ...
About Chemistry - The vapor pressure of pure water at 25 °C is 23.8 torr. ...
Chemistry: Raoult's Law - If 0.380 mol of a nonvolatile nonelectrolyte are ...
Chemistry - Which of the following statements is (are) true? A. The vapor ...
Chemistry - The vapor pressure of water is 23.8 torr. at 25 degrees C. Determine...
chemistry - given 2C6H6+15O2->12CO2+6H2O 1. Starting with a confined ...

For Further Reading

First Name:
School Subject:
Answer: