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Investigation of Unknown compound
Member rating: No Rating | Words: 1524 | Submitted: Sun Mar 02 2008
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IDENTIFICATION OF AN ORGANIC UNKNOWN INTRODUCTION In this investigation I will get a number of unknown organic compounds to which I have to identify using a number of different chemical and physical techniques. The flow-chart below shows the chemical techniques I will use to identify the functional group of the unknowns. (1.TEST WITH UNIVERSAL INDICATOR) TURNS RED TURNS ANY OTHER COLOUR (2.TEST WITH BROMINE WATER) (3.TEST WITH 2,4 DNPH) (4.TEST WITH TOLLENS REAGENT) 1. Test unknown with Universal indicator PROCEDURE: Add several drops of the unknown substance to universal indicator inside a test tube using a pipette. OUTCOME: A colour change to red indicates either a carboxylic acid or phenol is present. Any other colour change shows alcohol, aldehyde, ketone or ester. EXPLANATION: Single indicators, such as litmus, are very weak acids. If the concentration of hydrogen ions is changed at a certain pH the indicator will change to a different structure. Universal...
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