SampleExam1

SampleExam1 - Name (print) Chemistry 142 Exam #1 SAMPLE FOR...

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Chemistry 142 Exam #1 SAMPLE FOR FULL CREDIT ON CALCULATIONS YOU MUST SHOW ALL WORK ! GOOD LUCK! (14) 1. Give the name (a, b) or chemical formula (c, d) for each of the following compounds. (a) (NH 4 ) 2 S (c) hydrofluoric acid (b) P 2 O 5 (d) copper(II) perchlorate (4) 2. Circle all of the ionic compounds in problem 2. (14) 3. You require 250.0 mL of a 0.150 M C 6 H 12 O 11 solution for an experiment. You find a stock solution that is 1.00 M in C 6 H 12 O 11 . Give the amounts of stock solution and water that you will need to combine to make the solution you need. stock solution amount water amount (11) 4. Draw a reaction progress energy profile plot for the reaction: C D, which is an endothermic, two-step reaction with a slow first step. Add to this plot the expected profile for the same reaction to which a catalyst is added that provides a faster, one step pathway. On your plot label C, D, E a (catalyzed), and E a (uncatalyzed). reaction progress
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SampleExam1 - Name (print) Chemistry 142 Exam #1 SAMPLE FOR...

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