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LSU / Engineering / CHEM 3492 / What causes the vapor pressue to increase or decrease?

What causes the vapor pressue to increase or decrease?

What causes the vapor pressue to increase or decrease?

Description

School: Louisiana State University
Department: Engineering
Course: CHEM 3492
Professor: B. chen
Term: Fall 2019
Tags: osmotic pressure, vapor pressure, and PhaseEquilibrium
Cost: 50
Name: CHEM 3492 Exam study Guide
Description: These notes have all the information needed for CHEM 3492 Exam. The material is explained in easy way.
Uploaded: 11/08/2019
8 Pages 30 Views 2 Unlocks
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Colligative propertiesWe also discuss several other topics like What will happen when two species competes on one seed?

Solvent A and solute B

na>>nbIf you want to learn more check out What is fitness? how is fitness measured?
We also discuss several other topics like Define electrolysis of water.

         nb i very mall

(concentration) mb = =Don't forget about the age old question of Which inventory method minimizes income tax expense?

  1. Vapor pressure
  • It is increased or decrease based on the amount of solute present in the system
  • Adding solute lowers the vapor pressure.

If you want to learn more check out What was used as a justification for eugenics?

Azeotropes

  • Systems with positive or negative deviations are referred to as azeotropes

  • At the azeotrope, the vapor and the liquid compositions are equal
  • Components at the azeotrope can not be separated, and to more from the azeotrope in binary separations.
  1. Add third component
  2. Change the pressure
  3. Change the amount of one of the components.

Don't forget about the age old question of Define bimolecular nucleophilic substitution.

Ideal solution

@ co - existence line

Ma(L,T,P) - Ma (g,T,P) chemical potential of component A

assume ideal gas

        (L,T,P) = (g,T,P)=(+

        (L,T,P) = (g,T,P)= +

(L,T,P) - (L,T,P) =  -

        (L,,P,T)<(L,P,T)         pure component tend to be in mixture

Gibbs energy of ideal solution:

pure :

Mixture:

        

                =

                =(-

                =

        

Osmotic pressure

  • The solvent particles will move to the right(from high concentration of solvent A to low concentration) the more will increase the level of the solution to high h.the change in the solution level is the osmotic pressure.

where PgL = = massⴷacceleration

Since the solution is dilute =                 

 

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