Chap16-Part1

Chap16-Part1 - Effect of Catalysts A catalyst increases the...

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Unformatted text preview: Effect of Catalysts A catalyst increases the rate of approach to equilibrium. A catalyst does not affect the final equilibrium state. Example: A ↔ B Without catalyst: k f1 & k r1 With catalyst: k f2 & k r2 Δ E 1 For the following reaction, Δ H > 0: 6 CO 2 (g) + 6 H 2 O(l) ↔ C 6 H 12 O 6 (s) + 6 O 2 (g) How is the equilibrium yield of C 6 H 12 O 6 affected by (a) increasing P(CO 2 )? (b) increasing temperature? (c) removing CO 2 ? (d) decreasing pressure? (e) adding a catalyst? 2 For the following reaction, Δ H > 0: 6 CO 2 (g) + 6 H 2 O(l) ↔ C 6 H 12 O 6 (s) + 6 O 2 (g) How is the equilibrium yield of C 6 H 12 O 6 affected by (a) increasing P(CO 2 )? higher yield (b) increasing temperature? (c) removing CO 2 ? (d) decreasing pressure? (e) adding a catalyst? 3 For the following reaction, Δ H > 0: 6 CO 2 (g) + 6 H 2 O(l) ↔ C 6 H 12 O 6 (s) + 6 O 2 (g) How is the equilibrium yield of C 6 H 12 O 6 affected by (a) increasing P(CO 2 )? higher yield (b) increasing temperature? higher yield (c) removing CO 2 ? (d) decreasing pressure? (e) adding a catalyst? 4 For the following reaction, Δ H > 0: 6 CO 2 (g) + 6 H 2 O(l) ↔ C 6 H 12 O 6 (s) + 6 O 2 (g) How is the equilibrium yield of C 6 H 12 O 6 affected by (a) increasing P(CO 2 )? higher yield (b) increasing temperature? higher yield (c) removing CO 2 ? lower yield (d) decreasing pressure? (e) adding a catalyst? 5 For the following reaction, Δ H > 0: 6 CO 2 (g) + 6 H 2 O(l) ↔ C 6 H 12 O 6 (s) + 6 O 2 (g) How is the equilibrium yield of C 6 H 12 O 6 affected by (a) increasing P(CO 2 )? higher yield (b) increasing temperature? higher yield (c) removing CO 2 ? lower yield (d) decreasing pressure? no change (e) adding a catalyst? 6 For the following reaction, Δ H > 0: 6 CO 2 (g) + 6 H 2 O(l) ↔ C 6 H 12 O 6 (s) + 6 O 2 (g) How is the equilibrium yield of C 6 H 12 O 6 affected by (a) increasing P(CO 2 )? higher yield (b) increasing temperature? higher yield (c) removing CO 2 ? lower yield (d) decreasing pressure? no change (e) adding a catalyst? no change 7 Chemistry 102: General Descriptive Chemistry II Chapter 16: Acid-Base Equilibria 8 Chapter 16 Homework – Sections 16.1 to 16.6 Red exercises: 16.13, 16.15, 16.17, 16.19, 16.21 16.25, 16.29, 16.31, 16.33, 16.35, 16.37, 16.39, 16.41, 16.43, 16.45, 16.47, 16.51, 16.53, 16.55, 16.61, 16.63 9 The Arrhenius Concept of Acids and Bases Acids are substances that, when dissolved in water, increase the concentration of H + ions. All molecules that are acids contain hydrogen atoms but not all molecules containing hydrogen atoms are acids. Example: HCl ( g ) + H 2 O( l ) → H + ( aq ) + Cl- ( aq ) + H 2 O( l ) Bases are substances that, when dissolved in water, increase the concentration of OH- ions....
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Chap16-Part1 - Effect of Catalysts A catalyst increases the...

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