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Prelaboratory Questions Name Laboratory Section 1. Consider the reaction below. Co(H;O),?+ (aq) + 4 Cl (aq) COC1,? (aq) + 6 H2O (1) The equilibrium constant expression (K) of the reaction does not include the concentra- tion of H2O even though the reaction produces six moles of water. Explain. 2. In the following reaction, NO2 is a brown gas and N,O4 is colorless. NO2 (g) (brown) = 2 N,O4 (g) (colorless) a) When the temperature decreases, the color of the equilibrium mixture gets lighter. Is this reaction exothermic or endothermic? b) What will happen to the value of the equilibrium constant, K, if the temperature of the reaction is increased? (continued on next page) 193

Prelaboratory Questions Name Laboratory Section 1. Consider the reaction below. Co(H;O),?+ (aq) + 4 Cl (aq) COC1,? (aq) + 6 H2O (1) The equilibrium constant expression (K) of the reaction does not include the concentra- tion of H2O even though the reaction produces six moles of water. Explain. 2. In the following reaction, NO2 is a brown gas and N,O4 is colorless. NO2 (g) (brown) = 2 N,O4 (g) (colorless) a) When the temperature decreases, the color of the equilibrium mixture gets lighter. Is this reaction exothermic or endothermic? b) What will happen to the value of the equilibrium constant, K, if the temperature of the reaction is increased? (continued on next page) 193

Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter18: Principles Of Chemical Reactivity: Entropy And Free Energy
Section: Chapter Questions
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Prelaboratory Questions Name Laboratory Section 1. Consider the reaction below. Co(H;O),?+ (aq) + 4 Cl (aq) COC1,? (aq) + 6 H2O (1) The equilibrium constant expression (K) of the reaction does not include the concentra- tion of H2O even though the reaction produces six moles of water. Explain. 2. In the following reaction, NO2 is a brown gas and N,O4 is colorless. NO2 (g) (brown) = 2 N,O4 (g) (colorless) a) When the temperature decreases, the color of the equilibrium mixture gets lighter. Is this reaction exothermic or endothermic? b) What will happen to the value of the equilibrium constant, K, if the temperature of the reaction is increased? (continued on next page) 193
Transcribed Image Text:Prelaboratory Questions Name Laboratory Section 1. Consider the reaction below. Co(H;O),?+ (aq) + 4 Cl (aq) COC1,? (aq) + 6 H2O (1) The equilibrium constant expression (K) of the reaction does not include the concentra- tion of H2O even though the reaction produces six moles of water. Explain. 2. In the following reaction, NO2 is a brown gas and N,O4 is colorless. NO2 (g) (brown) = 2 N,O4 (g) (colorless) a) When the temperature decreases, the color of the equilibrium mixture gets lighter. Is this reaction exothermic or endothermic? b) What will happen to the value of the equilibrium constant, K, if the temperature of the reaction is increased? (continued on next page) 193
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