lecture43_chem110_sas

lecture43_chem110_sas - Chemical Reactions: Equilibrium...

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Chemical Reactions: Equilibrium Part 4 CH110 FA10 SAS 1 FINAL EXAM Monday, Dec. 13 th , 10:10-Noon Prepare for Final Exam Lecture 43: December 8 th Lecture 44: December 10 th Read: Ch. 15.6 – 15.7 Suggested Problems: BLB 15: 51,53,70; Packet 15: 11-13
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CH110 FA10 SAS 2 By the end of Today’s Lecture you should know: Calculations involving K eq Predicting the direction of a reaction using Q Le Châtlier’s Principle Catalysis KEY QUESTIONS: THE BIG PICTURE Chemical Reactions: Equilibrium Part 4 Do real reactions always proceed to completion? What forces drive the reaction process? How do the properties of heterogeneous reactions differ from homogeneous? Remember: macroscopic properties come from microscopic origins What is Le Châtlier’s Principle? When a system is disturbed, why does it attempt to return to equilibrium? How fast do systems reach equilibrium?
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CH110 FA10 SAS 3 Consider the Following Reactions: Are these examples of Redox Reactions? Cr 2 O 7 2- is orange and CrO 4 2- yellow 2CrO 4 2- (aq) + 2H + (aq) Cr 2 O 7 2- (aq) + H 2 O(l) Cr 2 O 7 2- (aq) + 2OH - (aq) 2CrO 4 2- (aq) + H 2 O(l) What will happen to the solution if I add acid? What will happen to the solution if I add base? Le Châtlier’s Principle and Reactions Are these Neutralization Reactions?
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Le Châtlier’s Principle and the Real World CH110 FA10 SAS 4 Example : the Haber-Bosch Process N 2 (g) + 3 H 2 (g) 2 NH 3 (g) Catalytic synthesis of ammonia from nitrogen and hydrogen gases cat. Why is this important??
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lecture43_chem110_sas - Chemical Reactions: Equilibrium...

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