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StudentLecture_10

StudentLecture_10 - Housekeeping Details Reading Chapter 16...

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Housekeeping Details Reading: Chapter 16 Reading for next time: Sect. 10.1-10.4; CH 17; 3.7, 4.6-4.7 Lab: Chapter 7, Bromocresol Green Equilibrium Systems HW6: Due as usual.
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Clicker Question For which of the following reactions is product formation favored by _____________________________________ ____________________________? A) CO(g) + 3 H 2 (g) CH 4 (g) + H 2 O(g) ΔH o = -206.2 kJ B) CO 2 (g) + C(s) 2 CO(g) ΔH o = 172.5 kJ C) H 2 (g) + I 2 (g) 2 HI(g) ΔH o = -9.4 kJ D) N 2 (g) + O 2 (g) 2 NO(g) ΔH o = 181 kJ E) N 2 (g) + 2 O 2 (g) 2 NO 2 (g) ΔH o = 66.4 kJ
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Heating ammonium hydrogen sulfide leads to decomposition. NH 4 HS(s) NH 3 (g) + H 2 S(g) H > 0 Predict the effect on the equilibrium of __________ ____________ at a constant temperature. A. no change B. shifts left C. shifts right Clicker Question Predicting Equilibrium Changes
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Heating ammonium hydrogen sulfide leads to decomposition. NH 4 HS(s) NH 3 (g) + H 2 S(g) H > 0 Predict the effect on the equilibrium constant of ____________________ at a constant temperature. A. no change B. increase C. decrease Clicker Question Predicting Equilibrium Changes
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Heating ammonium hydrogen sulfide leads to decomposition. NH 4 HS(s) NH 3 (g) + H 2 S(g) H > 0 Predict the effect on the equilibrium of __________ __________________ . Answer by choosing: A. no change B. shifts left C. shifts right Clicker Question Predicting Equilibrium Changes
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Clicker Question Predicting Equilibrium Changes Heating ammonium hydrogen sulfide leads to decomposition. NH 4 HS(s) NH 3 (g) + H 2 S(g) H > 0 Predict the effect on the equilibrium _______ ____________ the reaction. A. no change B. shifts left C. shifts right
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Clicker Question Predicting Equilibrium Changes Heating ammonium hydrogen sulfide leads to decomposition. NH 4 HS(s) NH 3 (g) + H 2 S(g) H > 0 Predict the effect on the equilibrium constant ____ ______________ the reaction. A. no change B. increases C. decreases
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Equilibrium Systems: Smog Ozone layer Acid rain Many industrial syntheses Biochemical systems tend to equilibrium
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Balance Between Equilibrium & Kinetics N 2 (g) + 3H 2 (g) = 2NH 3 (g) H = -91.8 kJ NH 3 NO NO 2 HNO 3 explosives fertilizers other products At low temperatures, too slow. At higher temps K becomes small.
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