General Chemistry 1B. Lecture 13. Physical Equilibrium, Pt. III.

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UCI Chem 1B General Chemistry (Winter 2013)
Lec 13. General Chemistry Intermolecular Forces -- Physical Equilibrium -- Part 3
Instructor: Donald R. Blake, Ph.D.

License: Creative Commons BY-NC-SA

Description: UCI Chem 1B is the second quarter of General Chemistry and covers the following topics: properties of gases, liquids, solids; changes of state; properties of solutions; stoichiometry; thermochemistry; and thermodynamics.

This video is part of a 17-lecture undergraduate-level course titled "General Chemistry" taught at UC Irvine by Professor Donald R. Blake.

Recorded February 26, 2013.

Index of Topics:
0:00:25 Boiling Point Elevation
0:10:08 Freezing Point Depression
0:16:43 Coligative Properties of Electrolyte Solutions
0:21:16 Molal Boiling Poin Elevation and Freezing Point Depression
0:22:03 Osmotic Pressure
0:34:50 How much Glucose...?
0:38:44 Reverse Osmosis
0:40:37 Raoult's Law Graph
0:51:20 What is the Vapor Pressure of a solution
0:56:23 Revised Vapor Pressure Question
1:00:24 What is the Mole Fractions of...
1:05:25 Colligative Properties of Nonelectrolyte Solutions
1:07:11 Vapor Pressure Lowering

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Комментарии

i don't get the depression in freezing point part. i understand boiling and the elevation in boiling and why it happens..but have a problem understanding freezing at all. if the Liquid phase is in equilibrium with the Solid phase.. then how can we talk of pressure affecting the equilibrium? lyk how do we apply pressure to a liquid/or solid? if somehow we do apply pressure then a/c le chatelier..equilibrium should reduce pressure..and hence go to the liquid side..(am assuming liquid has less pressure)..but from the phase diagram increasing P at a given T changes from liqud to solid...(which bdw is what exactly should happen as we r bringing the molecules closer together at the same T)

MrShzz

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