Functional group

Functional group - Brittney Brown June 11, 2009 Functional...

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Brittney Brown June 11, 2009 Functional Groups Questions 1. A functional group is an atom or group of atoms that are the site of reactivity under specified conditions which can be used for the basis of naming the given molecule. 2. a. alcohol (3-pentanol) ~3400cm -1 (O-H) b. alkene ~3050 cm -1 (C-H) c. carboxylic acid (pentanoic acid) ~3000 cm -1 (O-H) d. ketone(2-pentanone) ~1700 cm -1 (C=O) e. alkyl halide (2-fluoropentane) ~1795 cm -1 f. aldehyde (pentanal) ~2750 cm -1 (C-H) 3. The functional group ketone was consistent with the results. The compound formed an orange precipitate indicating that it could be the functional group ketone or aldehyde. In further investigation, when the compound did not have a positive result for the Tollen’s test it was concluded to be ketone because aldehyde would have reacted to form a silver mirror precipitate. 4. My unknown code was XZX and I concluded it to be aldehyde. 5. The solubility test results were negative which meant my unknown compound was not soluble
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This note was uploaded on 02/03/2011 for the course CHEM 3361 LAB taught by Professor Tapu during the Summer '08 term at Kennesaw.

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Functional group - Brittney Brown June 11, 2009 Functional...

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