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Name: ____________________________ Section: ______________ Date: _____________ Data Sheet System 1: CrO4-2 Ion/Cr2O7-2 Ion Equilibrium Step Observations 2 5 7 Write the net ionic equation for the equilibrium. Write the Keq equation for the equilibrium. Does the equilibrium shift to the left or right by the addition of H2SO4? What experimental observations show this shift? How did the addition of H2SO4 affect the equilibrium? Does the equilibrium shift to the left or right by the addition of NaOH? What experimental observations show this shift? How did the addition of NaOH affect the equilibrium? System 2: Dissociation of CH3COOH in H2O Step Observations 9c 9g 9k Write the chemical equation for the dissociation of CH3COOH in H2O. Write the Keq equation for the dissociation of CH3COOH in H2O. Does the equilibrium shift to the left or right by the addition of CH3COONa? What experimental observations show this shift? How did the addition of CH3COONa affect the equilibrium? Does the equilibrium shift to the left or right by the addition of NaOH? What experimental observations show this shift? How did the addition of NaOH affect the equilibrium? System 3: CoCl2 Ion/[CoCl4]-2 Ion Equilibrium Step Observations 14 16 18 Write the net ionic equation for the CoCl2 Ion/[CoCl4]-2 Ion equilibrium Write the Keq equation for the CoCl2 Ion/[CoCl4]-2 Ion equilibrium. Does the equilibrium shift to the left or right by the addition of HCl? What experimental observations show this shift? How did the addition of HCl affect the equilibrium? Does the equilibrium shift to the left or right by the addition of DI H2O? What experimental observations show this shift? How did the addition of DI H2O affect the equilibrium? System 4: Dissolution of NH4Cl in H2O Step Observations 20c 20e 20j Is the dissolution of NH4Cl exothermic or endothermic? Write the chemical equation for the dissolution of NH4Cl in H2O, including heat. Write the Keq equation for the dissolution of NH4Cl in H2O. Does the equilibrium shift to the left or right by the addition of HCl? What experimental observations show this shift? How did the addition of HCl affect the equilibrium? Does the equilibrium shift to the left or right by the changes in temperature? What experimental observations show this shift? How did the changes in temperature affect the equilibrium?

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