Chapter 25, Problem 28P

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13) When solid barium phosphate is in equilibrium with its ions, the ratio of barium ions to phosphate ions would be: a. 1:1 b. 2:3 c. 3:2 d. 2:1 14) The pH of a 0.05 M solution of HCl(aq) at 25°C is 15) The pH of a 0.20 M solution of KOH at 25°C is

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16) A 2.0 L flask containing 2.0 x 10-3 mol H2(g), 3.0 x 10-3 mol Cl2(g), and 4.0 x 10-3 mol HCl(g) at equilibrium. This system is represented by the following chemical equation: H2 (g) + Cl2 (g) → 2HCl(g) Calculate the equilibrium constant for this reaction.

7) The pH of a 0.05M solution of HCl(aq) at 25°C is a. 1.3 b. 2.3 c. 3.3 d. 12.7

11) The Ksp expression for copper (II) sulfate is: a. [Cu2+][SO4²¯] b. [Cu²+]² [SO4²]² c. [Cu²+]²[SO4²] d. [CuSO4] 12) Which of the following is true about a chemical system in equilibrium? a. All chemical reactions have stopped b. The concentration of reactants is equal to the concertation of products c. The forward and reverse reaction rates become equal d. The system will remain at equilibrium regardless of any external factors

21) Explain the difference between the rate of a reaction and the extent of a reaction. Why are both of these concepts important, if you are a chemical engineer that is trying to develop a process to produce a large volume of a specific type of chemical compound?

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