Chem 402 Lecture 32: L32 4:12:17
Premium

4 Pages
45 Views

Department
University College - Chemistry
Course Code
University College - Chemistry Chem 402
Professor
Barnes Alexander

This preview shows page 1. Sign up to view the full 4 pages of the document.
Description
12 April 2017 L32: Non-Ideal Mixtures I. Equilibria and Non-Ideal Mixtures A. Ideal Solutions 1. Solutions that obey Raoult’s law are called ideal solutions a. At coexistence:  𝐴,𝑇,𝑝 =  𝑔,𝑇𝐴𝑝 𝐴 ) b. Assuming an ideal gas:  𝑔,𝑇,𝑝 ) =  𝑔,𝑇 + 𝑅𝑇𝑙𝑛( ) 𝑝𝐴 𝐴 𝐴 𝐴 𝑝° β€’ Note: Β° assumes this is a pure state 𝑝𝐴 c. Thus,  𝐴,𝑇,𝑝 =  𝑔,𝑇𝐴+ 𝑅𝑇𝑙𝑛( ) 𝑝° βˆ— βˆ— d. Add an identity:  𝑔,𝑇,𝑝 ) =  π’ˆ,𝑻 + 𝑅𝑇𝑙𝑛( ) + 𝑹𝑻𝒍𝒏( ) βˆ’ 𝑅𝑇𝑙𝑛( ) 𝑝𝐴 𝐴 𝐴 𝑨 𝑝° 𝒑° 𝑝° β€’ The bolded parts =  𝑙,𝑇,𝑝 ) 𝐴 e.  𝑙,𝑇,𝑝 =  𝑙,𝑇,𝑝 + 𝑅𝑇𝑙𝑛( 𝑝𝐴𝑝°) 𝐴 𝐴 𝑝°𝑝𝐴 β€’ Raoult’s Law tells us that 𝑝 = 𝑋 π‘βˆ— π΄βˆ—π΄ f.  𝑙,𝑇,𝑝 =  𝑙,𝑇,𝑝 + 𝑅𝑇𝑙𝑛( 𝑋𝐴 𝐴) 𝐴 𝐴 𝑝𝐴 βˆ— 𝑝𝐴 g. Thus, for a mixture: 𝐴𝑙,𝑇,𝑝 =  𝑙,𝐴,𝑝 + 𝑅𝑇𝑙𝑛( ) π‘π΄βˆ— β€’ Chemical potential of β€œA” in the mixture = chemical potential β€œA” in pure liquid + mole fraction of β€œA” in mixture β€’ X As the mole fraction, always less than one β€’ RTlnX
More Less
Unlock Document

Only page 1 are available for preview. Some parts have been intentionally blurred.

Unlock Document
You're Reading a Preview

Unlock to view full version

Unlock Document

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit