1aa3-2005-fe-v1-for- - Page 1 of 26 Name Chemistry 1AA3 VERSION 1 Instructors M Austen M Brook P Lock B McCarry Duration 3 hours MCMASTER

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Page 1 of 26 Name: ____________________ Student number: ______________ Chemistry 1AA3 April, 2005 VERSION 1 Instructors: M. Austen, M. Brook, P. Lock, B. McCarry Duration: 3 hours MCMASTER UNIVERSITY FINAL EXAMINATION This test contains 30 numbered pages. There are 40 multiple-choice questions appearing on pages numbered 3 to 26. Pages 27 and 28 are for your rough work. Page 29 includes some useful data and equations, and there is a periodic table on page 30. You may tear off the last page to view the periodic table and the data provided. You must enter your 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. 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 to 30 are each worth 2 marks, questions 31 – 40 are each worth 3 marks; the total marks available are 90. There is no additional penalty for incorrect answers. BE SURE TO ENTER THE CORRECT VERSION OF YOUR TEST (shown near the top of page 1), IN THE SPACE PROVIDED ON THE ANSWER SHEET. ANSWER ALL QUESTIONS ON THE ANSWER SHEET, IN PENCIL. Instructions for entering multiple-choice answers are given on page 2. SELECT ONE AND ONLY ONE ANSWER FOR EACH QUESTION from the answers (A) through (E). No work written on the question sheets will be marked . The question sheets may be collected and reviewed in cases of suspected academic dishonesty. 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. 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. 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. ©McMaster University Chemistry Department, 2005 continued on next page
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Page 2 of 26 You are writing VERSION 1 of this exam. Make sure you have correctly entered your version number (“1”) in the correct column on your scan sheet (see p. 2 for details). Questions 1 through 30 are worth two (2) marks each. 1. Commercial ethanol is produced by the reaction of ethene with water at 600K. CH 2 =CH 2 (g) + H 2 O(g) CH 3 CH 2 OH(g) K p = 9.0 × 10 3 Ethene and water when placed in a reaction vessel at 600K had initial partial pressures of 100 atmospheres (atm). What is the equilibrium partial pressure of ethene at 600K? (A) 0 atm (B) 0.11 atm (C) 50 atm (D) 99.9 atm (E) 100 atm 2. The K a of citric acid (C 6 H 8 O 7 ) is 7.5 × 10 –4 . Calculate the pH of a 0.50 M solution of aqueous citric acid.
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This note was uploaded on 09/28/2010 for the course MATH 1025 taught by Professor Tammie during the Fall '10 term at York University.

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1aa3-2005-fe-v1-for- - Page 1 of 26 Name Chemistry 1AA3 VERSION 1 Instructors M Austen M Brook P Lock B McCarry Duration 3 hours MCMASTER

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