In class notes for October 31, 2007

In class notes for October 31, 2007 - General Chemistry...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
General Chemistry Lecture 102a In class notes for October 31, 2007 Look for Ch. 7 OWL online today Last lecture o Osmosis and Distillation o Henry’s Law Today o Distillation o Chapter 7 Mixture of ether and chloroform X e =0.5 X c =0.5 In Solution P e 0 =200 torr P c =60 torr = = . = Pe XePe0 0 5200 torr 100 torr = = . = Pc XcPc0 0 560 torr 30 torr Mole fractions in vapor = = = . XvapE PePTot 100torr130torr 0 77 This is the more volatile compound. = = = . XvapC PePTot 30torr130 torr 0 23 Concentration in vapor o Take vapor and condense o Now Solution X e =0.77, X c =0.23 Reevaporate = = . = Pe XePe0 0 77200 torr 154 torr = = . = Pc XcPc0 0 23 60 torr 14 torr P tot = 168 torr o Vapor phase concentration = = XvapE PePTot 154torr168torr = 0.92 X C (vap) =0.8 See A Clicker question Two beakers are inside a bell jar. Initially, one beaker is 1/3 full of water. The other beaker is 1/3 full of 1.0M NaCl aqueous solution.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

In class notes for October 31, 2007 - General Chemistry...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online