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For more information, please see full course syllabus of Chemistry
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Lecture Comments (6)

0 answers

Post by Maimouna Louche on July 21, 2012

We didn't see the other type of solution-heterogenous.

3 answers

Last reply by: Zachary McCoy
Sun Jan 5, 2014 6:18 PM

Post by priyanka thapa on October 13, 2011

am i mistaken, isnt the molarity of solution at the example solution concentration suppose to be 2.22 M ?

0 answers

Post by Zak Roeser on December 14, 2010

Correct me if I am wrong, but I believe on the "Dilution of Solutions" portion of the lecture the answer should be 8.00mL of water due to sig. figs. in the problem.

Solutions, Henry's Law, Concentration Equations

  • Solutions: every phase in every other; solutions in liquids most important

  • Saturation solubility: no more solute will dissolve in solvent; an equilibrium phenomenon

  • Henry’s Law for gases in liquids: s = KP; effects shown in carbonated liquids; divers and the “bends”

  • Concentration expressions: % by mass; molarity = mol. solute/L soln.; molality = mol. solute/ kg solvent

  • Do examples of interconverting solubility expressions for particular solutions

  • Dilution MV = const

  • Temperature effects: gases, always lower S as T increases; solids varying effects

  • Entropy means mixed-upness, chaos; temperature effects on S can be explained by enthalpy and entropy effects

Solutions, Henry's Law, Concentration Equations

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

  • Intro 0:00
  • Types of Solutions 1:43
    • Examples: Homogeneous Mixtures
    • Examples: Solid Solutions
  • Saturation Solubility 8:47
    • Example: Solvent and Soluten (Salt and Water)
    • Solubility Dependencies
  • Henry's Law 15:36
    • Values for Henry's Law Constant (Water)
    • Example: Soda Can
    • Example: SCUBA
  • Solution Concentration Expressions 26:02
    • Percentage by Mass
    • Example: Salt and Water
    • Molarity
    • Molality
  • Calculation of Solution Concentrations 32:42
    • Example: Sodium Chloride Solution
  • Dilution of Solutions 37:35
    • Example: Hydrochloric Acid
  • Effects of Temperature on Solubility (Gases in Liquids) 42:01
    • Example: Water
  • Effects of Temperature on Solubility (Solids in Liquids) 45:42
    • Examples: Various Salts
  • Entropy: Qualitative Introduction 52:25
  • Temperature Effects: Enthalpy, Entropy 55:39
  • Additional Example 1