Chem 5:
Quantitative Analysis
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Chem 5: Quantitative Analysis |
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OVERVIEW
Chemistry 5 is a sophomore class in Quantitative Analysis. The prerequisite is Chemistry 1B. It has two hours of lecture and 6 hours of laboratory each week.
"Here is a
small vial of white, water-soluble powder. What percentage of the powder
is chlorine?" To solve this laboratory problem, you will dry and weigh
samples of the powder, dissolve the samples in water, add silver nitrate
solution to precipitate the chlorine as silver chloride, and then filter,
wash, dry and weigh the precipitates. From the weights of precipitates
and samples, and the atomic weights of silver and chlorine, you calculate
the desired percentage. You do it three times in order to form a statistical
picture from which you can state the result with a known level of confidence.
This first laboratory experiment is an example of the kind of knowledge
and skill you acquire in this course. When you finish it you will have
a new appreciation of significant figures and reproducibility, you will
have been introduced to many new and useful methods for making chemical
determinations, and you will be able to make chemical equilibrium calculations
much better than you could before.
Precision and
stoichiometric relationships will cease to be concepts dealt with by rote
rules as you did as a freshman; as a second-year chemistry student you
will develop an intuitive understanding of these measurement and computational
concepts that goes far beyond what you could accomplish as a first-year
student.
This course
will enhance your resume greatly if you seek employment in a job involving
laboratory chemistry in any way. Our own Laboratory Instructional Assistant,
for example, could not function without the type of knowledge and skills
learned in Chemistry 5.
INSTRUCTOR
for Spring semester, 2005
We offer Chemistry 5 every other year in the spring. It was last taught in the spring of 2003, so we're teaching it again this semester. RELATED
LINKS
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Cabrillo College Chemistry Department / 6500 Soquel Dr. / Aptos, CA 95003 |
| Last Updated: 1/3/2005 |
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