CHEM 135 1st Edition Lecture 7 Outline of Last Lecture I Review of freezing point depression and boiling point elevation a Examples II Osmosis III Osmotic Pressure Outline of Current Lecture I Questions from Chapter 12 worksheet answers II Beginning of Chapter 13 Chemical Kinetics Current Lecture Chapter 12 Solutions worksheet 1 The Henry s Law constant of methyl bromide is k 0 159 mol L atm at 25 C What is the solubility of methyl bromide in water at 25 C and at partial pressure of 270 mm Hg a 0 0565 mol L b 0 355 mol L c 0 448 mol L d 42 9 mol L 2 A solution is prepared by dissolving 40 0 g of sucrose in 250 g of water at 25 C What is the vapor pressure of water at 25 C is 23 76 mm Hg a 0 198 mm Hg b 20 5 mm Hg c 23 6 mm Hg d 24 0 mm Hg 3 Determine the boiling point of a solution that contains 78 8 g of naphthalene dissolved in 722 mL of benzene Pure benzene has a boiling point of 80 1 C and a boiling point elevation constant of 2 53 C m a 2 2 C b 2 5 C c 80 4 C These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute d 82 6 C 4 Calculate the osmotic pressure of the solution containing 1 5 g of ethylene glycol in 50 mL of solution at 25 C a 8 5 atm b 11 8 atm c 12 4 atm d 24 0 atm Chapter 13 Chemical Kinetics Rate of a chemical reaction concentration time miles Speed hour Rate Rate change in concentration of a reactant or product as a function of time final initial A reactant consumed B product formed rate It is negative because the rate is decreasing Law of conservation A B T T A T
View Full Document
Unlocking...