Homework 3 Sutcliffe - huynh (hph268) Homework 3 Sutcliffe...

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Unformatted text preview: huynh (hph268) Homework 3 Sutcliffe (51060) 1 This print-out should have 17 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. This is the remainder of the material for Exam 1. 001 10.0 points Find the normal boiling point of 4 m CaCl 2 (aq), assuming it undergoes complete dissociation. The boiling point constant of water is 0 . 51 K kg / mol. Answer in units of C. Your answer must be within 0.3% 002 10.0 points Glycerol (a non-electrolyte that can be used as antifreeze in a car radiator) has a density of 1.261 g/mL and a molecular weight of 92 g. If 100 mL are mixed with 1 kg of water, what is a good estimate of the temperature at which this solution will freeze? ( K f water = 1 . 861 C/ m .) 1. 0.0 C 2. 12 . 4 C 3. 4 . 8 C 4. . 23 C 5. 2 . 6 C 003 10.0 points Polyacrylamide is a water-soluble polymer whose aqueous solution containing 25 g/L de- velops an osmotic pressure of 0.54 torr at 25 C. Find the approximate molecular weight of the polymer sample. 1. 35,000 g/mol 2. 1133 g/mol 3. 8,600,000 g/mol 4. 860,000 g/mol 5. 350,000 g/mol 004 10.0 points Consider the solutions Z1) 0.5 M Na 2 SO 4 Z2) 0.6 M NaCl Z3) 1.0 M sugar What answer gives the expected order of increasing osmotic pressure? 1. lowest Z2 < Z1 < Z3 highest 2. lowest Z3 < Z1 < Z2 highest 3. lowest Z2 < Z3 < Z1 highest 4. lowest Z3 < Z2 < Z1 highest 5. lowest Z1 < Z2 < Z3 highest 005 10.0 points Two aqueous solutions are separated by a...
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This note was uploaded on 06/06/2011 for the course CHEM 301 taught by Professor Wandelt during the Spring '08 term at University of Texas at Austin.

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Homework 3 Sutcliffe - huynh (hph268) Homework 3 Sutcliffe...

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