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Past Exam for CHEM 113 with Tossell at Maryland (UMD)

Exam Information

Material Type:Exam 1
Professor:Tossell
Class:CHEM 113
Subject:Chemistry
University:University of Maryland
Term:Spring 1996
Keywords:
  • Rate Constants
  • Extra Credit
  • Nitric Oxide
  • Experiments
  • Concentration
  • Hydrogen Ion
  • New Equilibrium
  • Temperature
  • Decomposition
  • Nitrous Oxide
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Sample Document Text

CHEM 113 - Dr. Toss~~n Exam 1 (even seats) February 28, 1996 ****************************************************************************************** R = 8.314 J mol -1 K-l ****************************************************************************************** The first 4 questions are worth 15 points each and the last 2 are worth 20 points each. The extra credit is worth 10 points. " Show your work and explain your answers. Be careful with sil:nificJU)t fil:ures. 1. Calculate the concentration of pyridine, C5H5N, in a solution that is 0.15 M pyridinium bromide, C5H5NHBr. What is the pH of the solution? Kb = 1.4 x 10- 9 for C5HSN. 2. Predict the general temperature and pressure conditions for the optimum conversion of ethylene (C2at) to ethane (C2H6). 3. Methanol, CH30H, is manufactured industrially by the reaction A gaseous mixture at 500 K is 0.020 M CH30H, 0.10 M CO, and 0.10 M H2. What w1ll be the direction of reaction if this mixture goes to equilibrium? The equilibriu...

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