pract.exam1 - 1. Consider the reaction H2(g) + Cl2(g)...

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1. Consider the reaction H 2 (g) + Cl 2 (g) <=> 2 HCl(g), which is exothermic as written. What would be the effect on the equilibrium position of increasing the temperature? A. Reaction would go to the right, making more chlorine B. Reaction would go to the left, making more HCl C. Reaction would go to the left, making more hydrogen D. Reaction would go to the right, making more hydrogen E. No change on the equilibrium position 2. Complete the following statement: We can expect _____ vapor pressure when the molecules of a liquid are held together by _____ intermolecular forces in the liquid and _____ vapor pressure when the intermolecular forces are strong. A. B. C. D. 3. Of the following, which would likely dissolve in toluene? A. Na 2 CO 3 B. NaCl C. C 6 H 12 O 6 D. Ca(HCO 3 ) 2 E. Cl 2 CCCl 2 4. At the house party, as the temperature went down, K went down. Which of the following statements is true?
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A. B. C. D. 5. You have learned in class that as the temperature of a water solution increases, the value of Kw increases and the pH of solution decreases. What does this say about the enthalpy of water dissociation? A. It is endothermic B. It is exothermic C. Kw is less than 1 so it is neither endothermic or exothermic. 6. The freezing point of seawater is about –1.85°C. If seawater is an aqueous solution of sodium chloride, calculate the molality of seawater. The k f for water is 1.86 K/m. A. B. C. D. E. 7.
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The phase diagram for a pure substance is given below. The substance is stored in a container at 150 atm at 25°C. Describe what happens if the container is opened at 25°C. A. The liquid in the container freezes. B. The solid in the container sublimes. C. The solid in the container melts. D.
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pract.exam1 - 1. Consider the reaction H2(g) + Cl2(g)...

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