Midterm1%2D2005 - Professor J.C. Scaiano Department of...

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Unformatted text preview: Professor J.C. Scaiano Department of Chemistry Tel.: 613-562-5896 University of Ottawa Fax: 613-562-5633 Ottawa, Canada K1N 6N5 E-mail: tito@photo.chem.uottawa.ca Please print CHM3125 Family name: MIDTERM 1 (25%) First name: 9-Feb-2005 Student #: Time allowed: 70 minutes Question 1 2 3 4 5 6 7 Total Value 20 10 5 5 5 5 5 50 Mark Notes IMPORTANT : You must answer questions # 1 and # 2. then, Answer 4 questions only from questions 3 to 7. Please indicate below which question you do NOT want marked. If you make no selection, question number 7 will not be marked. Please do NOT mark question number: CHM3125 Midterm 1 Feb. 9 th 2005 page 2 of 10 1. (20 MARKS stars show marks ) Short Answer no half marks. a) *The major products of a chain reaction are those formed in the ______________________ step(s). b) **Hydrocarbon fuel/air mixtures give flame temperatures around _______________K whereas fuel/oxygen mixtures give flame temperatures around ________________ K . c) *In a fuel cell, the free energy released from the reaction of hydrogen and oxygen is converted into _________________________________. d) **The main gaseous product from thermal cracking of hydrocarbons is _______________________. The main product from catalytic cracking is _______________________________. e) *The rate constant for a diffusion-controlled reaction will (circle one) INCREASE DECREASE STAY CONSTANT with decreasing solvent viscosity....
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Midterm1%2D2005 - Professor J.C. Scaiano Department of...

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