PILOT EXAM 4 - Show your work clearly in order to get full...

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Show your work clearly of TOTAL 120 in order to get full credit for calculation problems 111 PILOT Exam Nr 4 (SHORT)   (Chapters 7 and 8) Pts                                                   1. The correct expression for the rate of reaction A + C = D is: a) Rate = ∆[A]/∆D b) Rate = ∆[D]/∆[A] . ∆[C] c) Rate = -∆[D]/ ∆t d) Rate = -∆[C]/ ∆ t [4] 2. Choose correct completion of the sentence. A catalyst … a) …changes equilibrium position for the reaction [4] b) …does not take part in the reaction c) …. changes the extra energy required for the reaction to occur d) ….does not change the number of effective collisions 3. Give one example of reaction which is very fast, but not exactly the same as the one given in handouts: [4] 4. Exothermic reaction occurring in a beaker is the reaction during which [4] a) The system (reacting substances) is gaining energy and we feel the beaker hot b) The system is gaining energy and we feel the beaker cold c) The system is losing energy and we feel the beaker hot d) The system is gaining energy and we feel the beaker hot 5. If temperature is increased by 50 C the reaction rate is generally expected to [4] a) increase 4 times b) increase 5 times c) increase 32 times d) decrease 5 times 6. Which of the following is true? a) Heat is released by the system when C-H bonds are broken
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This note was uploaded on 10/28/2010 for the course CHEM 111 taught by Professor Polaski during the Winter '08 term at Central Washington University.

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PILOT EXAM 4 - Show your work clearly in order to get full...

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