CHEM& 163: General Chemistry III

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Class Program

Chemistry

Credits

Weekly Contact Hours

Course ID

091535

Meets Degree Requirements For

Natural Science with Lab

Description

Acid-base theory and practice, the chemistry of metals and metal cations, including oxidation and reduction potentials and electrochemistry, equilibria related to ion solubility and complex-ion formation. Entropy and free energy applied to equilibrium phenomena. Discussion and measurement of the qualitative and quantitative chemistry of common ions. Includes two weekly laboratories.

Grading Basis

Graded

Prerequisites

CHEM& 162

Course Learning Outcomes

Demonstrate understanding of the theory and practical applications of acids and bases, complex ions, oxidation-reduction, electrochemical cells, and thermodynamic principals.

Conduct a qualitative analysis of 11 principal cations, including descriptive chemistry of each, and be able to execute quantitative measurements of cations and anions using “wet lab” and atomic absorption techniques.

Develop the independence to experiment in an open ended methodology.

Demonstrate the ability to work as part of a group of 4-7 students in identifying and implementing multiple laboratory procedures for field study to meet requirements for a capstone group term project related to determination of water quality.

Anticipate, recognize and respond to potential chemical hazards in the laboratory environment, and as encountered in day-to-day circumstances

Apply scientific methodology and problem-solving skills to chemistry phenomena in a laboratory setting using proper techniques to develop complete experimental records, apply fundamental statistics to the interpretation of experimental results, identify sources of systematic and random error, and draw appropriate conclusions from the analysis of data

Effectively use analytical balances, pH meters, titrators, bacteriological measurement techniques, ultraviolet/visible and atomic absorption spectrophotometers and other appropriate laboratory equipment to design and perform experiments related to the capstone group term project.

Understand and utilize modern laboratory instrumentation at a level equivalent to that of students attending major transfer institutions

Core Topics

Acid-base equilibria; weak acids, bases, the influence of salts on pH, and the common-ion effect; the Henderson-Hasselbalch equation and buffers; titrations.
Lab: Check in and Acid-Base Titration
The solubility product constant; solubility and the common-ion effect; complex-ion equilibria; the effect of pH on solubility
Lab: Ksp of Pb(IO3)2 and Electrochemical Cells
Electrochemistry: half-reactions, voltaic cells and cell potential, standard potentials related to periodic table position and capacity as oxidizing or reducing agent
Lab: Introduction to “Qual”, Group I Cation Analysis (Known and Unknown)
Discussion: Qualitative analysis of group I, II and III cations
Lab: Group II Cation Analysis (Known and Unknown)
The laws of thermodynamics; entropy, entropy as f(T), the Gibb-Helmholtz equation, free energy and spontaneity
Lab: Group III Cation Analysis (Known and Unknown)
Water analysis capstone lab project discussions and sample collection field trip
Lab: Determination of Pb in a Water Sample by Atomic Absorption Spectrophotometry
Free energy and the equilibrium constant
Lab: General Qualitative Unknowns, Water Quality Measurements
Cell potentials and equilibrium; thermodynamic considerations; cell potential as f(conc.) and the Nernst equation; electrolytic cells
Lab: General Qualitative Unknowns; Water Quality Measurements
Water project discussion, Water quality laboratory report writing
Lab: General Qualitative Unknowns, Water Quality Measurements
Discussion and analysis of results and oral presentation
Lab: Water Quality Report Writing and Check Out Water Quality Reports and Laboratory Notebooks Due