Exam B - Name UIN Exam 3 Form B Chemistry 107 Section 503...

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Name____________________________________ UIN _______________________ Exam 3, Form B Chemistry 107 Section 503 Fall 2009 Please PRINT your name above. Then SIGN the signature line below. Also, PLEASE PUT YOUR NAME ON EVERY SHEET OF THE EXAM, in case a sheet gets detached from the exam. There are 29 questions on this exam. Questions 1-25 are multiple choice. PLEASE CIRCLE YOUR INTENDED ANSWERS ON THIS EXAM IN ADDITION TO BUBBLING THE ANSWER ON YOUR SCANTRON FORM. You will have 75 minutes to complete the exam. Work carefully, but pace yourself to finish within the allotted time. During the exam, keep all work covered. Exams may only be turned in during the exam period. Exams turned in after the exam period will not be accepted. Potentially useful information and a periodic table can be found on the back pages of the exam. You may tear off these pages for use during the exam. “On my honor, as an Aggie, I have neither given nor received unauthorized aid on this academic work.” Signature ____________________________________ DO NOT OPEN THE EXAM UNTIL YOU ARE TOLD THAT THE EXAM HAS OFFICIALLY BEGUN
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Name: ____________________________________________ Chemistry 107 Section 503 Fall 2009 Exam 3 Form B 2
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Chemistry 107 Section 503 Fall 2009 Exam 3 Form B 3 1. A reversible process is one that __________. a. can be reversed with no net change in either system or surroundings b. happens spontaneously c. is spontaneous in both directions d. must be carried out at low temperature e. must be carried out at high temperature 2. Given the following reactions N 2 (g) + 2O 2 (g) 2NO 2 (g) Δ H = 66.4 kJ 2NO(g) + O 2 (g) 2NO 2 (g) Δ H = -114.2 kJ the enthalpy of the reaction below is __________ kJ. N 2 (g) + O 2 (g) 2NO (g) a. 180.6 b. -47.8 c. 47.8 d. 90.3 e. -180.6 3. The phase changes B C and D E on the heating curve found at the back of this exam are not associated with temperature increases because the heat energy is used to __________. a. increase the distances between molecules b. break intramolecular bonds c. rearrange atoms within molecules d. form intermolecular bonds e. increase the density of the sample 4. Which one of the following should have the lowest boiling point? a. PH
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This note was uploaded on 02/23/2010 for the course CHEM 107 taught by Professor Generalchemforeng during the Fall '07 term at Texas A&M.

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Exam B - Name UIN Exam 3 Form B Chemistry 107 Section 503...

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