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General Chemistry II (CHE 111)
Laboratory Policy and Schedule
Spring 2013
Instructor:
Office:
Telephone:
Email:
Office Hours:
Ms. Cathy Ermann
SB 301
203.837.8969
______________________________
to be announced
Laboratory Outcomes: In this course, you will learn the laboratory techniques used to characterize the
physical and chemical properties of various substances, as well as the basics of good laboratory practice and
conduct. You will use experimental results to draw conclusion about our surroundings.
Safety Requirements:
1. Approved safety goggles must be worn during each laboratory session, unless otherwise instructed.
Students are responsible for obtaining their own goggles and bringing them to each lab. A student
who shows up without goggles will be asked to leave earning ZERO CREDIT for that day.
2. Appropriate dress for laboratory sessions as described in the safety rules includes flat shoes that cover
the feet and shirts that cover the midriff. NO FLIP-FLOPS, SANDALS OR HIGH HEELS ALLOWED.
3. As you enter the lab, please leave your bags, phones and other items in/on the cubbies by the door.
Bring only your laboratory manual, notebook, writing implements and your calculator to the lab bench.
4. Absolutely NO FOOD OR DRINK should be brought into the lab.
Expectations:
1. Be on time. Tardiness puts you at risk of missing important safety information and the quiz.
[Additional time will not be granted.] Rushing to catch up is not an effective way to learn.
2. You must read the entire experiment before coming to lab each day. Make note of anything you do
not understand, and you may ask about it during our pre-lab briefing.
3. Pre-lab assignment: After you have read the entire experiment, complete the “Advanced Study
Assignment” or specified pre-lab before coming to lab. Every experiment has a pre-lab. This is
collected at the beginning of each lab. Failure to have the pre-lab assignment completed at the
beginning of each lab, unless otherwise notified, will result in not being allowed to participate in lab
that day.
4. Infractions of the safety rules or lack of preparation may result in dismissal from lab, and a zero for that
lab.
5. Ask questions. If you don’t understand why you are doing a step seek the answer. You may consult
your peers as well as the instructor.
6. Not all of the labs will take the allotted time period and we can use any extra time to go over questions
and concepts from lecture.
If you have a disability and would like to request accommodations, please visit AccessAbility Services, located in Higgins Annex 017. They will give you an
accommodation letter which you should bring to me as soon as possible.
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7. There are no lab make-ups except in cases with validated medical reasons, military duty or death in
the family. If you miss a lab and have a valid reason make-up arrangements will be discussed between
the instructor and student.
Lab Reports: All lab reports will be due according to the schedule below and are due at the beginning of the
laboratory session. Late lab reports will not be accepted. Each student is responsible for completing his/her own
report, unless otherwise instructed. It is reasonable that the data and calculations section in a laboratory report be
identical in content for partners, however, the remainder of the report must be uniquely yours. Academic Honesty
is very important and you should be familiar with WCSU’s academic honesty policy. While I encourage you to work
together, everything you submit must be your own. Violations of the academic honesty policy will be subject to
disciplinary action as outlined in the WCSU student handbook.
Grading: The laboratory portion of this course is worth 25% of the final grade.
 Ten Advanced/Post lab Study Assignments @ 10 pts each
 Four Formal Laboratory Reports @ 50 pts each
 Six Short Laboratory Reports @ 30 pts each
100 pts
200 pts
180 pts
480 pts total
_______________________________________________________________________________________
Full Lab Report Format
Unless indicated on the schedule, lab reports must include the completed data sheet, and the following typed
sections (except for calculations, which may be neatly handwritten):
Purpose: Brief (1 or 2 sentence) statement of the point of the lab, and what you are trying to accomplish.
What is the objective of the laboratory? Why are we doing it, and what do we hope to learn? (3 pts)
Theory: Brief description (1-3 paragraphs) of the theory you applied to carry out this lab. Offer the general
equations you used to analyze your findings. Do not list the procedure! What chemistry does one need to
know about to understand what is going on in the lab? Write or draw any relevant structures or chemical
equations. (9 pts)
Procedure: Reference the lab manual or handout and indicate any changes you have made. (1 pt)
Data and Calculations: Include all experimental data in this section. Use tables/graphs and report all
measurements taken during lab. Report calculations in a separate table, being sure to include at least 1
detailed, representative calculation to show how you arrived at your results. Below this table, show how you
calculated numbers by including any formulas or equations. (15 pts)
If you have a disability and would like to request accommodations, please visit AccessAbility Services, located in Higgins Annex 017. They will give you an
accommodation letter which you should bring to me as soon as possible.
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Results and Discussion: This is the most important part of your report. Briefly describe your results, citing
actual numbers from data tables and/or calculations and compare them to known values if available. Critically
analyze your findings, and suggest possible sources of error and why your results may differ from theoretical
results. Did your results answer the central questions of the experiment? Do they make sense? Why or why
not? (15 pts)
Conclusion: Summarize what you have learned in the experiment in relation to the stated purpose. What
experimental results can you cite in support of your conclusion? (7 pts)
References: Be sure to cite all appropriate references used in writing your report. You must cite all
knowledge or images that come from your lab manual, book or Internet. Plagiarism will not be tolerated and
will result in a zero for the laboratory report.
Neatness counts! Reports must be typed and submitted as hard copies. Structures, calculations and
equations may be handwritten as long as they are legible. Emailed reports are NOT acceptable unless you
make advance arrangements with the instructor. An example laboratory report can be found in the glass
display case at the entrance to the laboratory.
If you have a disability and would like to request accommodations, please visit AccessAbility Services, located in Higgins Annex 017. They will give you an
accommodation letter which you should bring to me as soon as possible.
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CHE 111 - Laboratory Schedule Spring 2013
DATE
ACTIVITY
June 24
Introduction, Check-in and Safety Rules, Excel Review
June 25
Lab 1 (Handout)
Enthalpy of Vaporization - Full Report
June 27
July 1
July 2
Lab 2 (lab manual experiment #19)
Molar Mass Determination by Depression of the Freezing Point - Short Report
Lab 3 (Handout)
Crystal Structures – Short Report
Exam 1
July 4
No Class – 4th of July Holiday
July 8
Lab 4 (lab manual experiment #20)
Rates of Chemical Reactions I: Iodination of Acetone - Full Report
July 9
Lab 5 (lab manual experiment #23)
Determination of the Equilibrium Constant for a Chemical Reaction - Full Report
July 11
Lab 6 (lab manual experiment #XX)
LeChatelier’s Principle – Short Report
July 15
TBA – LAB 7 BUFFER LAB (Short Report)
July 16
Lab 8 (handout #453)
Determining the Equivalent Mass and Ka of an Unknown Weak Acid by Titrimetry
Full Report
July 18
Lab 9 (handout #342)
Determination of a solubility product constant of an organic salt - Short Report
July 22
Lab 10 (lab manual experiment #31) and Check-out
Determine of an Equivalent Mass by Electrolysis
Short Report due at the end of lab
July 23
Exam 3
July 25
Review for Comprehensive Exam
If you have a disability and would like to request accommodations, please visit AccessAbility Services, located in Higgins Annex 017. They will give you an
accommodation letter which you should bring to me as soon as possible.