Approved by University Studies Sub-Committee. A2C2 action pending.

 

University Studies Course Approval

 Department or Program: Chemistry

Course Number: 425

Semester Hours: 4

Frequency of Offering: Once per academic year, ~12 students per section

Course Title: Analytical Chemistry I

Catalog Description: A sequence of courses [including Chem 426] stressing modern analytical chemistry. A study of the theory and practice of the quantitative examination of chemical systems. CHEM 425 covers volumetric and fundamental visible spectrophotometric methods. Prerequisite for 425, one year of chemistry. Offered yearly.

This is an existing course previously approved by A2C2: Yes

This is a new course proposal: No

Proposal Category: Unity and Diversity: Critical Analysis

Departmental Contact: Jeanne L. Franz

Email Address: jfranz@winona.edu

Department Approval and Date: __________________________

Dean’s Recommendation and Date: __________________________

USS Recommendation and Date: __________________________

A2C2 Recommendation and Date: __________________________

Faculty Senate Recommendation and Date: __________________________

VPAA Recommendation and Date: __________________________

Dean’s Recommendation and Date: __________________________

President’s Decision and Date: __________________________

 

Chemistry 425 Analytical Chemistry I (Lecture and Lab - 4 s.h.)

 

The purpose of this chemistry course is to give students the tools to become trained scientists in all scientific disciplines. In successful completion of this course, students will have demonstrated laboratory skills on par with a working scientist, the ability to design and carry out an effective experiment, analysis skills in being able to sort good from spurious data, and the ability to support claims based on statistically significant data.

Catalog Description:

A sequence of courses [including Chem 426] stressing modern analytical chemistry. A study of the theory and practice of the quantitative examination of chemical systems. CHEM 425 covers volumetric and fundamental visible spectrophotometric methods. Prerequisite for 425, one year of chemistry. Offered yearly.

This course includes requirements and learning activities that promote students' abilities to...

a. evaluate the validity and reliability of information;

Requirements: Students generate reams of data in the laboratory portion of this course some of which may not be representative of the system they are studying. Students also gather a lot of data and other information from the internet for statistical and other analysis.

Activities: Data collected in lab is analyzed for its accuracy by comparison to known quantities when possible. Students are taught statistical tools for making such comparisons. The validity of unexpected results is tested with statistical tests such as the q test. Students are taught to evaluate the sponsors of internet sites and to use such evaluation to assess the validity of the information on the site.

b. analyze modes of thought, expressive works, arguments, explanations, or theories;

Requirements: Students are introduced to the literature of chemists. Well-designed experiments in the literature are critically analyzed for their content. Students are expected to emulate the well-designed experiments.

Activities: In-class group discussions analyze research papers for their experimental approach. Included in the discussion are things usually not mentioned in the paper such as quality control and future experiments. The purpose of this exercise is to get students to think like scientists.

c. recognize possible inadequacies or biases in the evidence given to support arguments or conclusions

Requirements: Students are taught to critically analyze raw data and published reports for possible conclusions and conflicts of interest.

Activities: Students gather data from various sources including already analyzed data. Students analyze data themselves and if their conclusions differ from others are asked to identify possible sources for the disagreement and resolve the differences.

 

d. advance and support claims

Requirements: Students are required to participate in lab exercises, the purpose of which is to gather data to demonstrate a chemical principle.

Activities: In their lab report, statistically analyzed data is presented and students make conclusions about what their data say with regard to a chemical principle. For example, in a lab investigating the effect of acid rain on statues, while students may expect more damage under the most acidic conditions, their data may or may not support this assumption. In their report students state what their data said and give possible reasons the data may or may not be consistent with previously held chemical principles.

 

Sample Syllabus

WINONA STATE UNIVERSITY

Chemistry 425 - Fall 2001

Instructor: Dr. Jeanne L. Franz (PA 312F) Phone: (457)-5297 email:jfranz@winona.edu

Course Web Page: http://course1.winona.edu/jfranz/Chem425_home.htm

Lecture: T Th 9:30-10:50

Lab: Pasteur 303 Tuesday 2:00-5:00 Laptop section,

Office hours: M 10-4, T 11:30-1:30, Th, 11:30-1:30, or by appointment

Required text: Quantitative Chemical Analysis 5th Edition, 1998, Harris

Required materials: Bound notebook & 2 Permanent Markers for lab  This is a laptop course, you will occasionally need to bring your laptops to lecture or lab. Everyone in the class should have access to a computer with networking capabilities and a spreadsheet program such as EXCEL.

 

General Information: Chemistry 425 is the first of two advanced courses focusing on modern Analytical Chemistry. It stresses the theory and practice of quantitative examination of chemical systems. There is a heavy emphasis on lab for this course. Prerequisite: 1 year of chemistry.

 

Grading:

Laboratory:   35% 90% + 2% A Grades are
Exam1 15% 80% + 2% non-competitive
Exam 2   15%  70% + 2% C and will be
Exam 3 10% 60% + 2% D assigned as
ACS exam 10%  < 60% F follows:
Homework 10%
Other Assignments  5%

 

Timeliness Policy: All lab reports (except as noted) will be due one week after completion of the experiment.  Late assignments will have 1% of the value deducted per day including weekends and holidays.  Plan ahead!  See lab part of the course web page for guidelines on how to prepare reports.

 

Exams: There will be 3, in class hour exams, plus a comprehensive ACS final exam. Makeup exams will be allowed only with a valid written excuse. Examples of excused absences are illness documented by a physician or serious illness or death in the family. Concepts presented in lab, lecture, discussed in the assigned chapters, or resource information from the web will be the basis for exam material.

 

Laboratory Safety: Approved safety goggles are required at all times in the laboratory. Students who wear contact lenses are strongly urged not to wear them during labs.

 

Completion of this course will include requirements and learning activities that promote your abilities to achieve the following Outcomes:

a. evaluate the validity and reliability of information;

b. analyze modes of thought, expressive works, arguments, explanations, or theories;

c. recognize possible inadequacies or biases in the evidence given to support arguments or conclusions

d. advance and support claims

 

Laboratory Schedule

Week #  Week beginning Experiment
1 August 28        Check In & Statistics/ Bias Lab * # Lab due Sept. 7
2 September 4 Sampling and solution prep for Metals in the Environment near end of semester
3 September 11 Acid Rain/ Dissolution of CaCO3
September 18  3 week lab
5 September 25   Acid Rain continued* # Lab due Oct. 5
6 October 2 Polyprotic Acids and Extraction of
October 9        Natural Indicator 3 week lab
8 October 16 Continued
9 October 23 Redox Reactions: Determination of the Vitamin C
10 October 30     Content of Orange Juice 2 week lab* # Lab due Nov. 9
11 November 6 Metals in the Environment: Spectroscopy
12 November 13 Design your own experiment (2 week lab)
13 November 20  Thanksgiving (no lab)
14 November 27 Design your own experiment continued
15 December 4 Flexible, finish up, clean-up

* These labs require that you share your data with your classmates.  See lab data section of web page for details.

 

Possible ideas for "Design Your Own" lab testing various Water Quality Parameters

Water Hardness in various locations           Iron in area aquifers

pH Gradients in Farm Fields Nitrates in area groundwater

Biological Oxygen Demand in wastewater Determination of Fluoride in water

Ammonia content of various fertilizers Phosphates in detergents

These ideas are only a start. We will be discussing how to design a quality experiment in class. When brainstorming ideas, please think of things that can be done with titrations or spectrophotometrically. We will not use the other instruments until Chem 426. See me with your ideas.

 

Format for Laboratory Notebook and Laboratory Reports

Your lab notebook is a written record of all that happened in the lab. At the front of the notebook, leave room for a table of contents. At the beginning of each experiment you should include the purpose of the experiment, data table for expected results, and answers to any pre-lab questions. Notebooks will be checked at the beginning of lab. The pre-labs should be emailed to the instructor prior to lab.  See the pre-lab part of the web page for further details.   Part of the score for each lab will be based upon the pre-lab being complete before lab and the completeness of your observations. While in lab you should record all observations and numerical data. I will be collecting your notebooks periodically to assess how good of record you are keeping. All lab reports will be due one week after completion of the experiment except as noted above. Please bring your lab notebook to lecture for sharing of data and discussion.  You will also need to put your data from some experiments on the web under the lab data portion

 

Topics to be covered and corresponding chapters in Harris

Introduction to the tools of Analytical Chemistry/ Statistics Chapters 1-5

Sampling and Sample Preparation Chapters 0 and 28

Equilibrium Chapter 6

Acids and Bases Chapters 7, 9, 10, 11, 12

Introduction to Spectrophotometry Chapter 19

Colorimetric and Redox Titrations Chapters 13 and 16

Gravimetric Analysis Chapter 27

 

Homework Due Dates

Ch. 1 Ex. A, C, 3, 7, 15, 19, 21, 26 Ch. 2 4, 14 Ch. 3 2,9 September 7
Ch. 4 Ex. B, E, 3, 8, 12, 13, 18, 19, 20, 22 Ch. 5 B,C,10, 17 September 14
Ch. 28 Ex. A, 1, 2, 5, 11 September 21
Ch. 6
Ex. A, D, F, 3, 8, 9, 15, 34, 35, 47, 49, 51, 57 October 3
Ch. 7
Ex. A, 1, 5, 8, 9, 13, 28 Ch. 9 D October 10
Ch. 10
Ex. C, D, H, 5, 12, 16, 19, 26, 27, 31, 38 October 19
Ch. 11
Ex. A, B, D, 6, 7, 12, 16, 21 October 26
Ch. 12
Ex. A, E, 4, 11, 12, 18, 24, 35, 37, 41, 43, 46, 62 November 7

Additional Homework to be announced

 

Successful completion homework and laboratory exercises and participation in lecture activities will promote your ability to achieve Outcomes a to d.

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