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Transcript
CHEMISTRY 3.5 WORKSHEET FOUR ANSWERS ORGANIC Alcohols continued 1. The reaction product is a haloalkanes which is insoluble in the mixture and so forms a cloud of tiny droplets. 2. Acidified permanganate (or acidified dichromate) aldehydes carboxylic acids ketones Tertiary 3. No Product CH3COCH3 (propanone) CH3CH2CH2CHO (butanal) No Product CH3CH2COCH3 (butan-2-one) CH3COCH2CH2CH2CH3 (hexan-2-one) CH3CH2CH2COOH (butanoic acid) 4. In order to oxidise a tertiary alcohol a carbon-carbon bond would have to be broken and this does not take place. 5. (a) (b) 6. (a) (b) (c) (d) (e) (f) A milder oxidising agent is used, such as acidified dichromate, and the aldehyde is distilled off as soon as it is made. In order to make a carboxylic acid, the reaction is done under reflux so the aldehyde can be further oxidised. CH3CH=CH2 CH3CH2CH2Cl Conc H2SO4 PCl5 / PCl3 / HCl, ZnCl2 CH3CH2CHO H+/Cr2O72-
