Skyline College A.J. Bates Professor of Chemistry

     Chemistry 220 - General Chemistry 2 - Spring 2017

Chem 210 - General Chemistry 1Chem 235-238 - Organic Chemistry 2 Chem 220 - Lab Manual & Extra Practice ProblemsScience Lecture Series
Gay Straight Alliance

Laboratory Manual & Laboratory Information

EXPERIMENTS and LABORATORY ACTIVITIES
               
Laboratory Manual Handouts, Reading & Additional Information

  • Experiment #1: Factors Affecting Reaction Rates
  • Experiment #2: Determination of a Rate Law by the Method of Intial Rates
    • Lab Handout
    • Statistical Analysis: Standard Deviation
      • Important Change:
        • For the Experiment #2 report, you are not required to provide the complete DISCUSSION section as outlined in the handout. Instead, comment on the value of k, the standard deviation, and what the relationship between them says about the precision or accuracy of your data.
      • For all other sections, follow the guidelines in the handout.
  • Experiment #5: Determination of Keq by spectrophotometry
  • Experiment #8: Buffer Solutions
    • Lab Handout
      • For parts 1&2, we will perform the alternate study assignment
      • System 3 Prelab Requirements:
        • PURPOSE & Buffer System REACTION
        • DATA TABLE
      • AA (Morning) Section - Revised Procedure
      • AB (Afternoon) Section - Revised Procedure (provided in lab)
      • Mini Lab Report:
        • Follow the guidelines. However, you may omit systems 1-2 for the report.
          We only performed system 3.
        • Be sure to plot moles (or mmol) acid & base vs. pH.
        • Be sure to calculate buffer capacity both for acid and base.
        • Answer all of the Post-Lab Questions.
          We will discuss those pertaining to Systems 1-2 in lab
  • Experiment #9: pH-monitored Titrations
    • Lab Handout - Updated Spring 2017
    • The possible unknown monoprotic acids for Part B of the pH titration experiment are:
      • lactic acid
      • crotonic acid
      • chloroacetic acid
    • The possible unknown diprotic acids for Part C of the pH titration experiment are:
      • oxalic acid
      • succinic acid
      • L-tartaric acid
        • pKa1 = 2.89
        • pKa2 = 4.40
  • Experiment #10: Determination of the Ksp of an Organic Salt
    • Lab Handout
      • Please prepare a standard prelab; however, the prelab question is NOT required.
    • Class Data
      • Be sure to include this data (adding to it the appropriate average/standard deviation analysis discussed in lab) along with your report!
    • Solubility (from the CRC Handbook of Chemistry & Physics):
      • KHT (Potassium Hydrogen Tartrate) = 0.42 g/100 mL at 15ºC
      • PbCl2 = 0.99g/100mL at 20ºC
  • Experiment #11: Determination of the Thermodynamics of the Dissolution of Borax
  • Experiment #12: Reactivity Series & Galvanic Cells
    • Lab Handout
    • Mini-Report:
      • Provide calculations, equations, results, and diagrams for each part of the lab as indicated in the lab handout.
      • A formal discussion and conclusions are NOT required.
  • Experiment #13: Galvanic Cells & the Nernst Equation
    • Lab Handout
    • Mini-Report:
      • Provide calculations, equations, results, graphs and diagrams for each part of the lab as indicated in the lab handout.
      • A formal discussion and conclusions are NOT required.
  • Experiment #14: Electrolytic Cells & the determination of the Faraday Constant.
    • Lab Handout
    • Mini-Report:
      • Provide calculations, equations, results, and diagrams for each part of the lab as indicated in the lab handout.
      • A formal discussion and conclusions are NOT required.

I will be updating some of the laboratory activities this semester. The handouts below are for reference only. The files above are ready to print.


 

SAMPLE LAB TESTS & LAB TEST REVIEW

  • Experiment #2 Practice:
    • Rework Prelab Question #1
    • Rework your own data analysis, starting from your time data for trials 1-6 and trials 7-12.
      • Both orders you determine should be 1.
  • Experiment #3 Practice:
    • Rework Prelab Questions
  • Experiment 4 - Student Data (previous semester)
    • I recommend determining Q for the reaction for Week 4 for both Esterification and Hydrolysis as extra practice for Lab Test #1.
    • ANSWERS (for Week 4)

 

LAB TEST Answer Keys