Title: This course covered complex equilibria including acidbase, chelation, oxidationreduction, and precip
1Overview of the Fundamentals of Analytical Science
- This course covered complex equilibria including
acid/base, chelation, oxidation-reduction, and
precipitation equilibria. - Tools of the trade include absorption
spectroscopy, gas chromatography, liquid
chromatography, and instrumental methods. - There is an emphasis on speciation and the
control of equilibria through competing
equilibria. - There is a close connection to the laboratory.
2Three examples of the importance of equilibria
aA bB cCdD
- Protein folding
- Environmental pollutants
- Wine making
3AcidBase and Precipitation Equilibria in Wine
Miguel Palma et al. Departamento de Química
Analítica, Universidad de Cádiz-Spain (JCE 2004)
Acidbase and precipitation equilibria in wine
are used to teach the importance of chemical
equilibria to the wine industry. The stability of
wines is dependent on chemical equilibria, mainly
the precipitation equilibrium of potassium
hydrogen tartrate. However, this precipitation
equilibrium is influenced by acidbase
equilibrium and vice versa. A simple but
effective experiment demonstrates the
interactions between simultaneous equilibria
involving hydrogen tartrate and highlights the
importance of multiple equilibria in real-world
systems.
4Select problems studied
We examined precipitation reactions, acid-base
chemistry, and complexation chemistry. We
examined combined precipitation and complexation
for PbI2NaI and AgX NaBr. We examined
acid-base combined with precipitation for CaF2
and Ba(C2O4). We examined complexation and
acid-base equilibria for tiron and ETDA. We
examined complexation, acid-base chemistry in
heterogeneous media.
5Key considerations
Titrations, absorption spectroscopy combined with
Beers law, pH meters, indicators, electrodes
were key tools used. Mass balance, charge
balance, equilibria, alpha plots, and master
equations were the key theoretical tools
used. Both numerical (Excel) and analytical
solutions were emphasized. Electrochemistry
clearly showed the link between thermodynamics
and chemical equilibria.
6Course Objectives
Chemistry 329 is the intermediate level
analytical chemistry course for majors that
require mastery of chemistry or for students
preferring a more challenging and in depth
presentation. It emphasizes quantitative
laboratory skills, fundamental analytical
chemistry, and problem solving involving complex
chemical equilibria. The course used example
applications in chemistry, biology, and
environmental science. This course covered
acid/base, chelation, oxidation-reduction, and
precipitation equilibria and absorption
spectroscopy, gas chromatography, liquid
chromatography, and instrumental methods. There
is a particular emphasis on speciation and the
control of equilibria through competing
equilibria.
7 Hanford Nuclear Facility
Hanfords first reactor - B Reactor - operated
from September 1944 to February 1968. Plutonium
produced in the B Reactor was used in the bomb
dropped on Nagasaki, Japan.
8(No Transcript)
9This is the view inside one of Hanfords 177
underground waste storage tanks.
10THE THREAT There are 177 aging and corroding
underground tanks, that contain high-level
radioactive hazardous nuclear waste, on the
Hanford Site. Sixty-seven of those have already
leaked more than one million gallons of waste
into the soil and groundwater. More tanks will
fail at Hanford more waste will reach
groundwater and be-gin moving toward the Columbia
River. Risks to the environment and the people of
the Pacific Northwest will skyrocket as more and
more waste seeps into the groundwater. Cleanup
costs will continue to soar
11Overview of the Fundamentals of Analytical Science
329 emphasizes quantitative laboratory skills,
fundamental analytical chemistry, and problem
solving involving complex chemical equilibria.
12Further courses in analytical chemistry
- Chemistry 524 This course is an intermediate
(junior or senior) level course in instrumental
analysis. It assumes knowledge of quantitative
analysis (Chem 327 or 329) and some physical
chemistry (Chem 561 or equivalent) which can be
taken concurrently. Knowledge of quantum
mechanics (Chem 562 or equivalent) is very
useful, but not mandatory. The purpose of the
course is to teach you how to make precise,
accurate, meaningful measurements on chemical
systems with instrumentation that is either
constructed or purchased.
13Tests, Final Exam and Grades
The final exam is cumulative. Your final course
grade will be based on the following weighting
laboratory (50), two evening exams (20),
problems sets and discussion (15), and final
exam (15). The final will be The final will be
12.25 P.M. Tuesday MAY 10.
14The Final Exam
- The exam will consist of 5 questions. These
questions include one question on each of the
following topics - 1) An acid-base buffer problem.
- 2) A redox problem where you are given a diagram
of a cell and asked several questions. - 3) A Separation problem involving partition
coefficients. - A problem similar to the Na2X plus AgBr or
Ni(NO3)2 in NH3 solution. - I will have office hours on Monday from 9-11.