Experiment on Isolating a Neutral Compound from a Mixture Containing an Acid Impurity

Topics: Distillation, Chemistry, Benzoic acid Pages: 9 (2253 words) Published: March 27, 2012
Contact hours:3 hours/week
Laboratory textbook:Pavia, Lampman, Kriz and Engel, Introduction to Organic Laboratoy Techniques 3rd Edition (2011) ** Students MUST obtain a copy of the textbook
This is an organic chemistry practical course which reinforce the theory and concepts studied in Organic Chemistry 1 (CHM456). It covers the learning of simple laboratory techniques such as reflux, distillation, extraction, crystallization and melting point determination, preparations of organic compound and separation of mixtures. The Techniques

Students are REQUIRED to read and understand the various techniques that will be covered in the laboratory sessions from the textbook. | Techniques| Page|
1| Laboratory Safety| 6|
2| Laboratory Glassware| 31|
3| Measurement of Volume and Weight| 39|
4| Heating and Cooling Methods| 58|
5| Reaction methods (eg: distillation, reflux)| 68|
6| Filtration| 90|
7| Physical Constants of Solids: The Melting Point| 103| 8| Crystallization: Purification of Solids| 122|
9| Extractions, Separations and Drying Agents| 141|
10| Simple Distillation| 179|
11| Thin Layer Chromatography| 261|

Laboratory Note Book
Do not come into a laboratory unprepared. Read and understand the experiments ahead of time; no more reading should be done during lab session. If you do not do this, you will be unable to plan and use your time efficiently. There are several lab techniques that you need to read on your own for each lab session for example distillation, extraction, crystallization etc. They are self-explanatory and if you are unclear about something always consult the lecturer. Students must write/draw a brief outline/flowchart of the procedure of the experiment before coming to the lab. Your note book will be checked by your lecturer for assessment. Please read Technique 2 on PAGE 23 on the Laboratory Notebook, Calculations and Laboratory Records carefully. The laboratory note book is mandatory and a student will not be allowed to conduct the experiment without a laboratory note book. Only hard bound notebook is acceptable. This note book is required for the pre-laboratory preparations as well as recording results, data and observation of each experiments. The pre-laboratory preparations must include not only procedural notes but also reactions and calculations. Assessment and Grading

The laboratory sessions contribute 20% (15% laboratory report, 5% rubrics for laboratory skills) of the course grade. The success of your experiments will depend on how well you conduct the expeiments to achieve the objectives. This is reflected in the marks obtained. The marks for each experiments will come from the following: A.| Laboratory Reports(all reports are individual work)| 25 marks| B.| Rubric for Laboratory Skills * Pre-laboratory preparations * Handling chemicals and apparatus * Organization of work * Time management * Observation of products| 20 marks|

Laboratory Report
A well written report is vital to achieving a good grade. Besides conducting the experiments carefully, the students are expected to write a good report which will reflect a good understanding of chemistry behind the experiments. 1. All laboratory report MUST BE submitted one week after the experiments. 2. The cover page should contain the following information: * Course Name

* Course Code
* Number and Title of Experiment
* Name of Student
* Name of Partners (for group work)
* Name of Lecturer
* Date of Experiment
* Date of Submission of report
3. The following marking scheme table must be included with the laboratoy report (at cover page as well) | Allocated mark %| Mark %|
Aims/Objectives of the experiment| 1| |
Introduction| 3| |
Experimental procedure| 3| |
Results and Observations| 4| |
Calculations| 4| |
Discussions| 4...
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