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Past Exam for CHEM 271 - CHEM FUNDAMENTALS II at Maryland (UMD)

Exam Information

Material Type:Exam 1
Professor:Staff
Class:CHEM 271 - CHEM FUNDAMENTALS II
Subject:Chemistry
University:University of Maryland
Term:Spring 2000
Keywords:
  • Naoh Solution
  • Temperature
  • Concentration
  • Determination
  • Standardized
  • Short Answers
  • Aqueous Solution
  • Nitrous Acid
  • Hydrochloric Acid
  • Chemical Kinetics
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Sample Document Text

CHEM 113, Section 41 (Devo(f:i) Exam 1 March 1, 2000 YOUR NAME (printed) ___ _ Circle the name of your TA: Akshaya Gencay Natasha Nixon Noble Xinguang This exam has a total of 100 points. Please make sure you have: all five pages, Do not write in this space l. __ 11 0 2. ___ ,/9 3. __ /4 4. ___ /10 5. __ 115 6. __ ./9 7. ___ ,/5 8. ___ ,/12 9. ,_----'116 10. __ 110 TOTAL ___ ~1100 PART I. Short answers. Only the answers written on the lines or in the spaces will be graded; setups in Part I will be ignored. 1. The initial rate of a reaction, A + B ~ C + D, was measured using different initial concentrations of A and B. Results are summarized in the table below: Expt. [A] [B] Initial rate O.lOM 0.10 M 2.2 x 10- 3 M s-1 2 0.20 M O.lOM 8.8 x 10- 3 M s-1 3 0.10 M 0.20M 4.4 x 10- 3 M s-1 (a) (4 pts) Give the values of the constants m and n in the rate equation, rate = k[A]m[B]n: m= n= (b) (6 pts) Write the value, with units, of the rate constant: k = 2....

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