Exam 2 CH101 Fall 2008 Form A ver. 2

Exam 2 CH101 Fall 2008 Form A ver. 2 - Name _ ID#_ Section...

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Name ______________________________ ID#_______________________ Section # ________ CH 101 EXAM 2 Fall 2008 - Form A Fill in your name, ID#, and section on this test booklet. Fill in and bubble in your name, ID#, and section on the scantron form. For question #60 mark A. Mark the best answer after reading all possible choices. Use a #2 pencil and make clean erasures to insure proper scoring. When finished, turn in your scantron sheet and show this booklet and your CUID to the proctor. Good Luck! 1. How much heat is given off to the surroundings when 9.0 g of aluminum react according to the following equation? 2Al + Fe 2 O 3 Al 2 O 3 + 2Fe ∆H rxn = - 849 kJ A. 7.6 × 10 3 kJ B. 2.8 × 10 2 kJ C. 1.4 × 10 2 kJ D. 5.6 × 10 2 kJ E. 2.5 × 10 3 kJ 2. Consider the following two gases connected by a tube of mercury. If the pressure of gas 1 is 0.95atm, what is the pressure of gas 2? A. 0.70 atm B. 0.80 atm C. 0.90 atm D. 1.10 atm E. 1.20 atm 3. If a reaction is exothermic and nonspontaneous at 25 o C and 1 atm pressure, it must be… A. spontaneous at a higher temperature. B. spontaneous at a lower temperature. C. nonspontaneous at all temperatures. D. exothermic only at lower temperatures. 4. How many grams of H 2 can be produced from 150.0 mL of 0.123 M H 3 PO 4 (aq) according to the following reaction? 3Mg (s) + 2H 3 PO 4 (aq) Mg 3 (PO 4 ) 2 (s) + 3H 2 (g) A. 0.0369g D. 0.679g B. 0.0554g E. 1.22g C. 0.317g 5. Which statement is true for the process below at constant pressure? CaCO 3 (s) CaO (s) +CO 2 (g) H = +169 kJ A. The process is endothermic and work is done by the system. B. The process is endothermic and work is done to the system. C.
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Exam 2 CH101 Fall 2008 Form A ver. 2 - Name _ ID#_ Section...

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