Chem 112 Lab – Fall 2017

Dr. Frank Cheng; ifcheng@uidaho.edu; 885-6387, Web Site, Chem 112 Web Site

Office: Renfrew Hall 026A, Office Hours: M & W 2:30-4:30 or by appointment, you are welcome to stop by any time, I may be available.

TA's and Ren 049 hours: TBA

Lab Manual: General Chemistry Laboratory Manual, Edited by Dinara Storfer, MacMillan-McNeil, ISBN 978-0738093991-8

Required Materials:

Padlock: One key or combination padlock with up to 3/8 inch diameter shank.

Goggles: It is Chemistry Department policy that safety goggles MUST be worn at all times in the laboratory or handling chemicals. Only departmentally approved safety goggles will be permitted in the laboratory. You can these buy goggles from Chem Stores (REN 23).

Safety Issues: Open-toed shoes or sandals, shorts, or short skirts may not be worn in the laboratory. Shoes must cover the entire foot. Pants/skirts should reach to the ankles. Students who are not appropriately dressed for lab will be sent home to change. You must wear goggles at all times. Failure to do so will result in immediate expulsion from the lab and you will receive a grade of F for that lab.

Preparing for Lab: Read the lab manual before the lab. Prepare for the lab by writing (in your lab notebook): 1) the objective of the experiment, 2) safety considerations, and 3) an outline of the experimental procedures, including materials needed to perform the experiment.

Persons arriving more than 20 minutes late to lab will not be allowed to complete the lab on that day. Labs are scheduled for three hours. There will be no allowances for extra time. It is imperative that you come prepared so that you can complete the lab in a timely manner.

Quizzes: A quiz will be given on first day of every new experiment. The quiz will be based on material from the lab manual, including the prelab questions/calculations, and will take ~10 minutes. Students who arrive late for this quiz will be given a grade of zero. No makeup quizzes will be given.

Aug 22: No Lab

Aug. 29: Check in and Lab Policies.

Sept. 5: Lab 1. Wine Analysis

Sept 12: Lab 2. Wine Analysis

Sept. 19: Lab 3. An Introduction to Green Chemistry: Making Biodiesel and Soap

Spet. 26: Lab 4. An Introduction to Green Chemistry: Making Biodiesel and Soap

Oct. 3: Lab 5. Colligative Properties

Oct 10: Lab 6. Determination of the Enthalpy Change for the Decomposition of H₂O₂ and the Enthalpy of Formation of H₂O₂.

Oct. 17: Lab 7. Enthalpy Changes of Chemical Reactions

Oct. 24: Lab 8. Estimation of Entropy for the dissolution of a Salt

Oct. 31: Lab 9. Introduction to Equilibrium

Nov. 7: Lab 10. Le Chatelier Principle - Chemical Equilibrium Evolution

Nov. 14: Lab 11. Kinetics Hand Sanitizer

Nov. 28: Lab 12. Kinetics Reaction Rates

Dec. 5: Check Out

Lab Reports: Each written lab is due after the completion of the experiment. No late labs will be accepted. If more than two lab reports are not turned in, then a grade of “F” will be assigned for the entire course. Lab reports are graded on accuracy, precision, and answers to questions (if included), among other things. Not all experiments will be graded in the same way. Your TA will provide more specifics on grading and lab reports.

Makeup Labs: Makeup labs are only allowed for excused absences. An excused absence is defined by University of Idaho policy as a) an approved field trip or other official UI activity; b) confinement under doctor's orders; c) call to military duty; or d) leave of absence granted by student's academic dean. Students must contact the Chemistry Laboratory Coordinator (Dr. Yuwei Kan, REN 229, chem-labservices@uidaho.edu) in order to schedule a makeup lab. In the case of University excused athletic events and field trips, arrangements must be made a week prior to the absence. In the case of sudden severe illnesses, notify the Chemistry Laboratory Coordinator as soon as you realize that you are too ill to attend lab. Bring in a note from your doctor stating that you were too ill to attend lab as soon as you are back in classes. In all cases, make-up labs must be completed within two weeks of the regularly scheduled lab session and prior to check-out day, whichever comes first.

Grading Scheme.

Pre-lab quiz 5 points

Pre-lab assignment and lab 10 points

Post-lab assignment 5 points