Course Description: Chem 330 is a study of the common techniques and theory of gravimetric, volumetric, electrochemical, optical and chromatographic methods of analysis. Lecture, 3 hours; laboratory, 2 hours. Laboratory meets four and one-half hours per week. (Fall, Spring, Summer)

Course Information

Textbook: Quantitative Chemical Analysis 6th ed. Daniel C. Harris

Grading Policy:

Four hour exams will given during the semester. The lowest exam score will be dropped. A comprehensive final exam will be given and will consist of the ACS Standardized Exam. The following grading policy will be followed:

Projected grading scale:

To improve your grade, you may repeat one experiment within a time frame of two weeks after you receive a grade on the experiment. A new sample must first be obtained. A penalty of 10% will automatically be applied for the repeat. The deadline for reports will be 1 week after completion of the experiment unless otherwise stated. A penalty of 5% per week will result for reports turned in late. The procedure for submitting reports will be reviewed in class.

Absences

No make-up examinations will be scheduled. Should you miss an exam, the grade of 0 will be given. You may use this exam as the one you drop. Laboratory periods are permitted to be re-scheduled provided I am notified beforehand of an excused absence.

Significant Dates:

Final Exam

Tentative Lecture Schedule

Exam I Material

Chapter 1: Some Basic Concepts - A review of solutions and their concentrations and stoichiometric calculations.
Chapter 6: Aqueous-solution Chemistry- A review of chemical equilibrium

Chapter 9: Application of Equilibrium Systematic method for solving calculations to complex systems multiple-equilibria and separation based on solubility differences

Chapter 8: Effect of Electrolytes on Chemical Activity and Activity coefficients in Equilibria relations to solubilities

Chapter 27 Gravimetric and Combustion Analysis Treatment of Gravimetric procedures

Exam II Material

Chapter 4: Errors in Chemical Analysis Statistical treatment of errors

Chapter 7 Titrations Titration techniques, curves

Chapter 10: Theory of Neutralization Titrations Titration curves for strong acid/base, monoprotic weak acid/base titrations

Chapter 11: Titration Curves for Polyfunctional Titrations of polyprotic acids, buffer
Acids and Polyfunctional Bases solutions and alpha fractions

Chapter 12: Applications of Neutralization Reagents, applications and Titrations Calculations

Exam III Material

Chapter 13: Complex-Formation Titrations Complex-formation reactions, EDTA equilibria and applications

Chapter 18: Fundamentals of Spectrometry Electromagnetic radiation, spectrum
and instrumentation

Chapter 19: Applications of Spectrophotometry Applications

Chapter 20: Spectrophotometers Block diagrams of instrumentation

Exam IV Material

Chapter 14: Fundamentals of Electrochemistry Redox, potentials and cells

Chapter 16: Applications of Redox Titrations Titration curves and applications

Chapter 23 Introduction to Analytical Chromatography overview
Separations

Chapter 24-25 Applications of Chromatography GC, HPLC SFC and applications

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Students with disabilities who require accommodations (academic adjustments and/or auxiliary aids or services) for this course must contact the Office for Student Disability Services, Garrett 101. The OFSDS telephone number is (270)745-5004 V/TDD.

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Laboratory Schedule

Text: Procedures in Quantitative Analysis, Dahl et al.

Download: http://www.wku.edu/~darwin.dahl/.htm

Note: Prior to lecture on the day of your scheduled experiment, obtain the necessary standard or unknown and place in the oven to dry. Make sure and record the unknown # in your laboratory notebook! You will need to provide your own safety glasses/goggles, paper towels and dish soap.

Lab: T 12:30 - 5:00 pm Room 306
W 1:30 - 6:00 pm Room 306

SCHEDULE

* denotes working with a partner!

Homework suggestions: Harris

Chapter 1: 12 15 16 18 29 30 33

Chapter 6: 6 16 19 25 26 30 50

Chapter 9: 2 8 13 22

Chapter 8: 2 3 7 12 19

Chapter 27: 4 5 8 12 16

Chapter 4: 3 11 14 22

Chapter 7: 2 4 5 7 11 13 14

Chapter 10: 3 6 8 11 19 32 36

Chapter 11: 4 6 11 17 23 28

Chapter 12: 5 14 24 31 34 54 56

Chapter 13: 1 3 6 15 23 31 36

Chapter 18: 1 2 4 6 8 12 19

Chapter 19: 3 13

Chapter 20: 3 5 8

Chapter 14: 6 8 27 38

Chapter 16: 3 15 29

Chapter 23: 2 8 15 27 37

Chapter 24: 1 2 9 18

Chapter 25: 1 10 21

Chem 330 Laboratory Exercise

Excel Spreadsheet Exercise: Calculations/Graphing

The intent of these exercises is to familiarize yourself with the use of a spreadsheet and to be able to graph various types of data. The program we will use is excel.

A. Prepare a plot of Density of water vs Temperature.

Referring to pages 39-42 in Quantitative Analysis by Daniel Harris 6th ed., reproduce the spreadsheet and corresponding graph. Additionally, generate the best-fit equation for the data obtained. To obtain the equation use the third-order polynomial fit and select 4 significant digits.

B. pH dependance on the solubility of HgS in water.

Referring to pages 168-171 in your text, generate a graph of log(conc) vs pH, similar to Figure 9-3, by preparing a spreadsheet as done in the Box 9-2 example. Additionally, generate a plot of Charge Balance error (Y) vs pH (X) to graphically show what the pH of the solution would be. Report this value.

Turn in:

Part A: -Spreadsheet calculation
- Graph
- Best-fit equation and correlation coefficient (r)

Part B: -Spreadsheet calculation
- Graph (Fig 9-3)
- Graph Charge Balance Error vs pH
- report pH at 0 error

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