This week in laboratory we are doing the Photometric Determination of an Equilibrium Constant. We will do the experiment in PS255, not in PS453. There are pre-lab questions that will take a few minutes to do so do not wait to the last minute. In Pre-lab Q1 you will need to use the quadratic to solve the problem. Be sure to use all four significant figures when you do the calculation otherwise you may get some funky results. When answering Q2 only look at the first and possibly the second significant figure in your answers in Q1. Remember Thursday students will be using some real cool new equipment. I'm particularly interested in seeing data from Thursday's lab. I'd like to see how well the new equipment works.
This week in laboratory we are repeating a crystal violet experiment. The difference is this week we ae doing a verification laboratory experiment. I distributed the laboratory experiment in class on Friday, March 30, 2001. If you did not get your copy see your TA before laboratory, they have extra copies. You can also contact another student who has a copy. You will need to read the laboratory experiment BEFORE attending laboratory. This is one of the difference between HBL and verification experiment methods.
This week we are back in PS453 doing from Order comes Production. This is the second part of the cool kinetics experiment using a chemical reagent called crystal violet. Here is a video (there are several reactions on this video) showing the reaction of crystal violet with sodium hydroxide. During the week of March 12 - 14, 2001 you investigate this reaction and study it using a spectrophotometer. Our goal this week will be to actually follow the reaction using the spectrophotometer. In the previous experiment you established a relationship between absorbance (a ratio of the voltages) to concentration of the crystal violet. Knowing this relationship allows you to know the concentration of the crystal violet at any measure voltage. Be sure to bring a copy of the experiment to laboratory this week.
This week we are back in PS453 doing The Speed of a Chameleon. This is a cool kinetics experiment using a chemical reagent called crystal violet. Here is a video (there are several reactions on this video) showing the reaction of crystal violet with sodium hydroxide. During the week of March 12 - 14, 2001 we will investigate this reaction and study it using a spectrophotometer. Our goal this week will be to learn to use the spectrophotometer and to try to determine how we are going to investigate and study the speed (rate) of this reaction. Be sure to bring a copy of the experiment to laboratory this week.
We will be in PS255 this week to do Properties of Water experiment. This is a good experiment to explore one of the colligative properties, freezing point depression. Again there is are several pre-lab questions that must be completed before the experiment. You will also need goggles so be sure to bring them. There should be time to do the experiment and do some calculations and answer the post-lab questions so I recommend bringing a calculator. Wednesday students will do this experiment also.
This week in laboratory you will do recycle aluminum...similar to the big boys. The experiment will be distibuted in class on Monday, but you can get it here first. Recycling Aluminum. Note there are several pre-laboratory questions which are to be answered before coming to laboratory. So be sure to do them before arriving in laboratory. Be sure to read the experiment and pay close attention to which parts of the experiment are to be performed in the hood. You are using 2 M KOH and 6 M H2SO4, so handle those chemicals carefully.
This week in laboratory we will investigate data analysis. Here is the experiment. Print it out and bring it to laboratory. Be sure to bring your calculator as there are lots of calculations in this laboratory.
This week in laboratory we will investigate solids and their arrangement at the atomic level. Here is the experiment. Print it out and bring it to laboratory. The hypothesis for this experiment has to do with the arrangement of ions in a solid. It should be a fun and interesting exploration into geometry, electrostatic forces and 'unit cells'.
This week in laboratory we start the first of a two week laboratory titled Survial Organic Chemistry. Copies of the experiment will be distributed in lecture during the second week of class. If you would like you can review a draft version of this experiment.
The first page of the experiment has several problems that must be completed BEFORE you arrive in your discussion/laboratory during the week of January 29 - February 2. Do these problems on a separate sheet of paper. Be sure to include your TA's name and your section number on the sheet. Bring extra paper to laboratory this week. All of your notes/work will have to be recorded on separate sheets of paper from the laboratory experiment. Be organized as you work these next two weeks. Some of the points for this experiment will be awarded based upon on the organization, clarity of your experimental write-up. If you have questions talk to your TA.
Organic chemistry is covered in Chapter 15 of Silberberg. Here are some notes covering the organic chemistry that may help you in this experiment. Please be aware that we will be covering other material in lecture while doing the survival organic chemistry laboratory experiment. You will be responsible for the material covered in laboratory on Exam I. I also recommend you read sections 15.1 , 15.2 and 15.4 in Chapter 15 of your textbook.
Notes: Introduction to Organic Chemistry...alkanes, nomenclature of alkanes, and structural isomers; (sections 15.1 and 15.2)
Notes: Introduction to Organic Chemistry...condensed formulas and Lewis structures; (section 15.1 and 15.2)
Notes: Introduction to Organic Chemistry...alkenes, nomenclature of alkenes, geometric isomers and alkynes; (section 15.2)
Notes: Introduction to Organic Chemistry...important functional groups. (section 15.4).
You will be responsible for alkanes (nomenclature, formulas, and structural isomers) on Exam I. Review section 15.1 and 15.2 pages 604 - 615.
Review Problem Set
NO Lab Monday, January 15, 2001 laboratory will meet for the remainder of the first week of classes!
Introduction to the laboratory, Safety and Review Problem Set.