test2-2sul - Name: _ Student Number: _ CHEMISTRY 1A03/1E03...

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Name: ________________________ Student Number: _______________ Version 1 Page 1 CHEMISTRY 1A03/1E03 10 NOVEMBER 2006 Instructors: A. Bain, J. Barbier, R. Dumont, H. Jenkins, I. Vargas-Baca SOLUTIONS and MARKS (with PART-MARKS) MCMASTER UNIVERSITY - TERM TEST # 2 - DURATION: 120 minutes This test contains 17 numbered pages and 30 multiple-choice questions. Page 15 is extra space for rough work. Page 16 includes some useful data and equations, and there is a Periodic Table on page 17. You may tear off the last pages to view the periodic table and the data provided. You are responsible for ensuring that your copy of the question paper is complete . Bring any discrepancy to the attention of your invigilator. Questions 1-25 are each worth 2 marks, questions 26-30 are each worth 3 marks . The total marks available are 65. There is no penalty for incorrect answers. These question sheets must be returned with your answer sheet. However, no work written on the question sheets will be marked . You must enter your full name and student number on this question sheet, as well as on the answer sheet. Your invigilator will be checking your student card for identification. Make sure to enter the correct version number of your test (shown at the bottom of each page) in the correct column on the answer sheet (see instructions on page 2). Answer all questions on the answer sheet, in pencil . Instructions for entering multiple-choice answers are given on page 2. Select one answer for each question from the choices (A) through (E). Only Casio FX 991 electronic calculators may be used; but they must NOT be transferred between students. Use of periodic tables or any aids other than those provided, is not allowed. Do not make contact with other students directly. Try to keep your eyes on your own paper – looking around the room may be interpreted as an attempt to copy. Academic dishonesty may include, among other actions, communication of any kind (verbal, visual, etc .) between students, sharing of materials between students, copying or looking at other students’ work. If you have a problem please ask the invigilator to deal with it for you.
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Name: ________________________ Student Number: _______________ Version 1 Page 2 QUESTIONS 1–25 ARE WORTH 2 MARKS EACH. 1. Aluminum metal reacts with chlorine gas to form solid aluminum trichloride, AlCl 3 . What mass of chlorine gas (in g) is needed to react completely with 163 g of aluminum? A) 245 B) 489 C) 214 D) 643 2 marks E) 321 0.5 mark The reaction is 2 Al + 3 Cl 2 2 AlCl 3 . 163 g of Al contain 163/26.98 moles which react with (3/2 × 163/26.98) moles of Cl2 gas weighing 70.90 × 3/2 × 163/26.98 = 643 g. 2. PbCl 2 is insoluble in water. What volume (in mL) of a 0.750 M Pb(NO 3 ) 2 (aq) solution is required to completely precipitate the chloride ions from 0.500 L of a 2.25 M NaCl(aq) solution? A)
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test2-2sul - Name: _ Student Number: _ CHEMISTRY 1A03/1E03...

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