112%20Exam%203%20Sp%2707

112%20Exam%203%20Sp%2707 - BE ADVISED: IF THERE WERE ANY...

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BE ADVISED: IF THERE WERE ANY ERRORS IN THIS DOCUMENT, THEY HAVE NOT BEEN CORRECTED. Name _________________________ Chemistry 112 Section ____________ EXAM III Total Points = 125 TA ___________________________ Wednesday, 7:00 PM April 4, 2007 Directions: 1. Each student is responsible for following directions. Read this page carefully. 2. Write your name and other requested information on this page and on the separate answer sheet. 3. CODE your name on the answer sheet using an ordinary (#2) pencil. 4. CODE your correct 10-digit identification number (PUID) on the answer sheet. THIS IS VERY IMPORTANT! 5. CODE your section number on the answer sheet. Please use all four digits, 0101, 0102, 0201, etc. This is also very important! 6. Put all calculations on the examination pages. DO NOT PUT ANY EXTRA MARKS ON THE COMPUTER ANSWER SHEET! 7. This exam consists of 30 multiple-choice questions worth 4.17 points each. Choose the one best or correct answer for each question and write it both on your exam paper and on the computer answer sheet. The computer answer sheet is the only one that will be graded! 8. This exam consists of 8 pages plus a Periodic Table. Please check to be sure that you have them all! 1 END OF EXAM 1) Please make sure that you have entered 30 answers on your scan sheet. 2) Make sure that you have entered your name, ID number, and lab section number (4 digits). 3) You MUST turn the scan sheet in to your TA before leaving the exam!
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_____ 1. Consider the following reaction for solving problems 1 and 2: HCl + H 2 O H 3 O + + Cl Which label is correct for the reaction components as written? (a) HCl: base; H 2 O: acid (b) HCl: acid and base (c) HCl: acid; H 2 O: base (d) H 2 O: acid and base (e) none of the above _____ 2. Which pair is labeled correctly? (a) H 3 O + : conjugate base; Cl : conjugate acid (b) H 3 O + : conjugate acid; Cl : conjugate base (c) H 3 O + : solvent; C l : solute (d) H 2 O : conjugate base; HCl: conjugate acid (e) H 2 O : conjugate acid; HCl: conjugate base _____ 3. For the reaction: NH 3 + H 2 O NH 4 + + OH , which statement is true ? (a) Water is the acid (b) Ammonia is the acid (c) Water is the base (d) Ammonium ion is the acid (e) None of the above is correct. _____ 4.
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112%20Exam%203%20Sp%2707 - BE ADVISED: IF THERE WERE ANY...

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