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final - Chemistry 2000 Spring 2006 Final Examination Name...

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Chemistry 2000 Spring 2006 Final Examination Name: Student number: Time: 3 hours Aids allowed: Calculator Instructions: Answer all questions in the spaces provided. You can use the backs of pages for scratch work or for extra answer space. If you do need to continue an answer on the back of a page, make sure that the continuation is clearly labeled. Graphs should be drawn accurately on the graph paper attached to the back of this exam paper. Make sure that your graphs are clearly labeled with the question number. Question 1 2 3 4 5 6 7 8 9 Marks /5 /9 /3 /5 /4 /4 /9 /10 /7 Question 10 11 12 13 Total Marks /19 /11 /8 /14 /108 Formulas and data Order Integrated rate law 1 ln x = ln x 0 - kt 2 1 x = 1 x 0 + kt c = 1mol / L ln k = ln A - ¯ E a RT P = 1bar ¯ G = ¯ G + RT ln Q R = 8 . 314472JK - 1 mol - 1 ¯ G = - RT ln K To convert degrees Celsius to Kelvin, add 273.15. The specific heat capacity of water is 4 . 184JK - 1 g - 1 . Autoionization constant of water T ( C) 10 20 25 30 K w 0 . 29 × 10 - 14 0 . 68 × 10 - 14 1 . 01 × 10 - 14 1 . 47 × 10 - 14 Species ¯ H f ¯ G f (kJ/mol) (kJ/mol) C 6 H 12 O 6 ( s ) ( α -D-glucose) - 1274 . 4 - 910 . 23 C 6 H 12 O 6 ( aq ) ( α -D-glucose) - 1263 . 06 - 914 . 25 Cl - ( aq ) - 167 . 080 - 131 . 218 F - ( aq ) - 335 . 35 - 281 . 52 FeCl 2 ( s ) - 341 . 83 - 302 . 35 FeCl 3 ( s ) - 399 . 41 - 333 . 91 Pb 2 + ( aq ) 0 . 92 - 24 . 24 1
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1. An initially p H-neutral solution of cysteine (C 3 H 7 NO 2 S) reacts with solid HgO to form cystine (C 6 H 12 N 2 O 4 S 2 ) and metallic mercury. Balance the reaction. [5 marks] 2. 25 g of solid α -D-glucose (molar mass 180.156 g/mol) is dissolved in 100 mL of water, both
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