identifyingunknownalcohol-091110111154-phpapp02

identifyingunknownalcohol-091110111154-phpapp02 -...

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Identifying Identifying an Unknown Alcohol an Unknown Alcohol
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Background Background Classification Tests are qualitative tests which can indicate the presence of a particular functional group, such as an aldehyde or an alcohol. ¾ Two inviolable rules when performing classification tests: 1. Perform the test exactly as described. 2. Always perform tests on known compounds, one that will result in a positive test ( known positive ) and one that will result in a negative test ( known negative ) and then perform the tests on the unknown compound .
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Experimental Procedures Experimental Procedures ± Do this experiment before finishing the Grignard purification. For all procedures in this lab, follow the lab manual exactly as written, but change the order . (Do Part 1 after Parts 2 & 3) ± New experimental order : 1. Lucas Test 2. TCICA Test: use gloves 3. Derivative formation ± Omit the refractive index and micro-boiling point sections. ± Do not cross contaminate the contents of your test tubes. ± There are three Waste Bottles : 1. Recovered Lucas Solutions 2. Recovered TCICA Solutions 3. Recovered Alcohols Your lab report must state which type of alcohol is your unknown.
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Experimental Procedure Experimental Procedure Lucas Test Lucas Test ¾ The Lucas reagent is a solution of zinc chloride (ZnCl 2 ) in concentrated HCl.
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This note was uploaded on 11/25/2011 for the course CHEM 52705 taught by Professor Santon during the Spring '11 term at University of Texas at Austin.

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