General Chemistry 1315 Exam 3 Fall 2017 DO NOT TURN THIS PAGE UNTIL DIRECTED TO DO SO Name: Lab Instructor: ID Number: Lecture Instructor: Read the following information completely before beginning the exam. 1. These tests are machine graded; therefore, be sure to use a No.1 or 2 pencil for marking the answer sheets. Completely blacken the answer circle. If you change an answer, completely erase the previously mark. 2. The exam time is 75 minutes. 3. All scantron bubbles must be filled in when the end of the exam time is announced. Students will not be allowed to keep filling in answer, name, or ID scantron bubbles once time is called. 4. Write your last name in the box labeled “NAME.” Skip a space and then fill in your first name and middle initial (if your name does not fit, fill out as much as possible). Bubble in the corresponding letter circles below your name. 5. Write your ID number in the space provided, starting with space “A”. There should be an extra box at the end of your ID number. Bubble in the corresponding circles below your ID number. If your ID number is blank or incorrect, your scores will not upload to Canvas. 6. Read the test carefully and select the best answer out of the possible multiple choice answers. 7. Mark your answer choice in this booklet and on the scantron answer sheet. 8. Use this booklet for scratch paper. You may not use your own scratch paper or periodic table. 9. Each exam score will be calculated from the number of correct answers. There is no penalty for guessing. 10. Students are responsible for any corrections made during the test. 11. Students who arrive more than ten minutes late, or arrive after another student has left, will not be allowed to take the examination. 12. The penalty for academic misconduct in the course is a grade of “F” for the course. 13. The scantron is the official record of the exam. Bubble in your answers carefully. 14. In the “Special Code” section of your scantron, indicate in column K the exam form you have (1, 2, 3, or 4): Column K Test Color Scantron Color Swipe 1 Blue Blue 2 Gold Black 3 Pink Red 4 Tan Brown General Chemistry 1315 Exam 3 Fall 2017 15. Indicate in columns L, M, and N the laboratory section you have in the “Special Codes” section: CHEM 1315 Fall 2017 TA Sections Instructor Section Testing Room Instructor Section Testing Room Dan Sheffield 011 DH 200 Juan Nunez 046 GLC 123 Dan Sheffield 012 DH 200 Kevin Snead 051 DH 211 John Pope 013 NH 170 Anae Bain 052 DH 128 John Pope 014 NH 170 Rachel Kim 053 DH 107 Dahang Yu 015 DH 206 Hailee Rau 054 NH 170 Yixiao Li 016 DH 200 Teja Bavenini 055 PHSC 108 Anae Bain 017 DH 128 Anita Ly 056 GLC 123 Irina Ishina 018 DH 125 Rachel Kim 057 DH 107 Zhu Zou 019 DH 103 Rob Fogle 058 DH 112 Kevin Snead 020 DH 211 Apryl Saunders 059 DH 103 Liwei Zhang 021 DH 200 Manila Sharma 060 DH 200 Cory Bunger 022 DH 200 Viridiana Herrera 061 DH 128 Matt Beckner 023 DH 211 Teja Bavenini 062 PHSC 108 Erik Alred/Wenhua 024 PHSC 100 Austin Knight 063 DH 200 Anita Ly 025 GLC 123 Abe La Montagne 071 DH 211 Lushuang Huang 031 DH 206 Viridiana Herrera 073 DH 128 Matt Beckner 032 DH 211 Erik Alred/Wenhua 076 PHSC 100 Juan Nunez 033 GLC 123 Apryl Saunders 077 DH 103 Rob Fogle 034 DH 112 James Cho 078 DH 116 Hailee Rau 035 NH 170 Austin Knight 079 DH 200 Zhu Zou 036 DH 103 Cory Bunger 080 DH 200 Abe La Montagne 037 DH 211 James Herndon 081 NH 251 Jaspreet Singh 038 DH 218 Irina Ishina 082 DH 125 Chris Worley 039 DH 122 Yixiao Li 083 DH 200 Lushuang Huang 040 DH 206 Manila Sharma 084 DH 200 Jaspreet Singh 041 DH 218 Dahang Yu 085 DH 206 Chris Worley 042 DH 122 James Cho 086 DH 116 Aayushi Chatterji 043 DH 211 Aayushi Chatterji 088 DH 211 Liwei Zhang 045 DH 200 General Chemistry 1315 Exam 3 Fall 2017 16. Indicate your lecture instructor in column O and P of the “Special Codes” section: Instructor Section Time Day Dr. O. Odeleye 01 11:30 – 12:20 am MWF Ms. J. Gray 02 9:30 – 10:20 am MWF Dr. L. Clifford 03 10:30 – 11:45 am TR Ms. J. Jensen 04 2:30 – 3:20 pm MWF Dr. L Clifford 05 1:30 – 2:45 pm TR For example, the “Special Codes” section would be filled out as depicted below for a student with Blue exam, Sheffield section 012, and Gray section 02: SPECIAL CODES K L M N O P 1 0 1 2 0 2 0 0 0 0 0 0 1 1 1 1 1 1 2 2 2 2 2 2 General Chemistry 1315 Exam 3 Fall 2017 PHYSICAL AND CHEMICAL CONSTANTS Atomic mass unit 1 amu = 1.66054 x 10‐27 kg 6.02214 x 1023 amu = 1 g Avogadro's number N = 6.022 x 1023 /mol Boltzmann's constant k = 1.38 x 10‐23 J/K Electron rest mass me = 5.486 x 10‐4 amu = 9.109 x 10‐28 g Electron charge e = ‐ 1. 602 x 10‐19 C Faraday's constant F = N e = 9.6485 x 104 C/mol Gas constant R = 8.3145 J/(K•mol) = 0.082058 L•atm/(K•mol) Heat (calories and Joules) 1 cal = 4.184 J Neutron rest mass mn = 1.00866 amu = 1.67495 x 10‐24 g pi π = 3.1415926536 Planck's constant h = 6.6260755 x 10‐34 J•s Pressure 1 atm = 760 mm Hg Proton rest mass mp = 1.00728 amu = 1.67262 x 10‐24 g Speed of light (vacuum) c = 3.00 x 108 m/s Volume of a cylinder V = hr2 (h = height, r = radius) Volume of a sphere V = (4/3) π r3 ENGLISH/METRIC CONVERSIONS 1 lb. = 16 oz. = 453.6 g 1 mile = 5280 ft. 1 in. = 2.54 cm 1 kilometer = 6.214 x 10‐1 mile 1 gallon = 3.785 liter = 4 qt 1 Angstrom = 3.937 x 10‐9 in. EQUATION(S) E 2.1810󰇧1 1󰇨 General Chemistry 1315 Exam 3 Fall 2017 ---------------------------------------------------This Exam contains a total of 35 questions----------------------------------------------------------------------------------------------------------------------------------------------------Laboratory-------------------------------------------------------------------------------------------------1. (2 pts) In the "Reversible Changes” laboratory, two solutions were used: Co(H2O)62+ (pink solution) and CoCl42-(blue solution). Which of the following observations would lead to a conclusion that reactions are reversible? 1. Adding HCl or NaOH causes a color change in the solution.2. Changing the temperature causes a color change.3. Mixing the two solutions