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Transcript
CHEMISTRY 3.5 Name: WORKSHEET FOUR ORGANIC CHEMISTRY Alcohols continued 1. When a warmed mixture of an alcohol and Lucas reagent goes cloudy, explain what is causing the cloudiness. 2. Alcohols can be oxidised by strong oxidising agents such as Primary alcohols are first oxidised to and then to . Secondary alcohols are oxidised to . alcohols are not able to be oxidised. 3. The following alcohols are reacted with acidified potassium permanganate solution. Under each formula, draw and name the product(s) of their oxidation. If no reaction occurs, write no product in the box. CH3 CH3 C H OH CH3 CH3 C OH OH CH3 CH3CH2 CH CH3 OH CH3CH2 CH2 CH2OH CH3CH2 CH (CH3)2OH CH3CH CH2 CH2 CH2 CH3 4. Explain why tertiary alcohols cannot be oxidised in this way. 5. When carrying out the oxidation of alcohols in the laboratory, the oxidation of primary alcohols can be controlled so as to yield the preferred product. Explain what can be done to favour the formation of 6. (a) The aldehyde product. (b) The carboxylic acid product. Complete the following flow chart showing some of the reactions of alcohols (a) (b) CH3CH=CH2 (c) SOCl2 Dil. H2SO4 (d) CH3 CH2 CH2OH H+/Cr2O72- (e) (f) CH3CH2COOH