CHEM 30AL Fall 2006 Experiment #15 Ion-Exchange Chromatography PRE-LAB REPORT GUIDELINE Pre-lab report must be written inside your lab notebook. IMPORTANT: Make sure that you always follow the proper laboratory safety protocol (refer to the course syllabus) BEFORE going to the lab. (I) On Line resourse: •Chromatography. (II) Pre-lab Report Format (Must turn in at the beginning of the first experiment period): (I) TITLE Must appear on each page. (II) INTRODUCTION Outline the goal(s) of the experiment as well as the experimental techniques that you will be using to purify/isolate/identify the desired product(s). (III) PROCEDURE - Flow chart for the ENTIRE experiment - Reference (must include title of manual, edition, authors, pages) (IV) MSDS The following chemicals will require you to use the MSDS database on the Web NH3 or NH4OH (concentrated), KSCN, KNO2 You should record the following MSDS information in your notebook for the chemicals listed above. (Printouts directly from the Web pages will NOT be accepted!!) (a) Product Name (b) Chemical Formula (c) Formula Weight (d) Melting Point; Boiling Point and Density (e) Health Hazard Data (summarize in your own words) (f) Spill and Disposal procedures (summarize in your own words) (V) PRE-LAB REPORT STUDY QUESTION (page 127): Only complete question #2 Note: For the HCl, the concentration unit of "F" is the same as "M". (VI) DATA/OBSERVATIONS (Start a NEW page for the following sections) Refer to study question #1 (page 127) You must record ALL the observations into your notebook during the lab period. You will receive no credit for the lab technique if your data only contain numerical values for this experiment.CHEM 30AL Fall 2006 Experiment #15 Ion-Exchange Chromatography POST-LAB REPORT GUIDELINE This is a GROUP REPORT (i.e. Turn in ONLY ONE report PER GROUP) (I) ABSTRACT - outline the goal(s) as well the lab techniques that you used in achieving such goal(s). Also. Summarize your experimental results. (II) DATA AND OBSERVATIONS Write down the names of all the members in the group. Write out the responsibility of each member both for the experiment and for the postlab report. Re-write all the observations into your post-lab. Record the details of analytical tests made on each eluate fraction. Write down the conclusion drawn from EACH test. Write balanced chemical equations for the analytical tests that you performed in the lab. Note: Net overall reactions are acceptable. (III) CONCLUSION Summarize ALL results (again). Explain the elution order of the metal ions in your unknown. In other words, explain why you observed such an elution order in the experiment. Hint: part of the reasoning can be explained through the use ionic radii of various metal ions (from your general chemistry textbook) to reason out the elution
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