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 0 answersPost by JOSHUA DIXON JOSHUA DIXON on July 21, 2012You are right both of his calculations are wrong at 37 mins in the video i have no clue how he thinks those are right. The concentration of N2O4 is .054 M The 2.17x10^-2 is the molarity not the concentration of 2 grams of the N2O4 he needs to correct this. 0 answersPost by Imededdine Terchoun on October 28, 2011In the lecture of the example: Acetic Acid and Ethanol, the calculation of the concentration of both gases at equilibrium is wrong due to not dividing by the volume of N2O4 in the start.I guess the professor forgot to divide that's all.Please correct me if I'm wrong

### Physical and Chemical Equilibrium, Equilibrium Law, Le Chatelier's Principle

• Equilibrium results from equal and opposite rates of chemical or physical processes

• Learn equilibrium law for general reaction aA + bB = cC + dD

• Write equilibrium law expressions for several chemical and physical systems

• Connection between Kc and Kp for gas equilibria

• Calculate equilibrium compositions of systems given K and starting mixture

• Le Chatelier’s principle: if P increases system reacts to fewest no. of gas moles; if reagent added system reacts to consume it; if T increases the endothermic direction is favored

### Physical and Chemical Equilibrium, Equilibrium Law, Le Chatelier's Principle

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
• Equilibrium in Physical Processes 1:13
• Example: Water Equilibrium (Vapor Pressure)
• Example: Water Equilibrium (Melting )
• Equilibrium in Chemical Processes 3:37
• Example: Acetic Acid and Ethanol
• The Equilibrium Law and Equilibrium Constant 9:11
• Equilibrium Law
• Equilibrium Constant K
• Equilibrium Expressions and Constants 14:11
• Example: Acetic Acid and Ethanol
• Example: Calcium Carbonate (Lime Burning)
• Standard Concentration and Activities 21:13
• Kp and Kr 23:56
• Example: Nitric Oxide
• Calculations of Equilibria 29:06
• Example: Acetic Acid and Ethanol
• Le Chatelier's Principle 40:47
• Stressors
• Example: Haber Bosch