Purification of a reaction product by extraction can be done in a couple of different ways. a) A liquid phase can be added that will extract the pure product from a mixture leaving the impurities behind. Or b) A liquid phase can be added that will extract the impurities from a mixture (leaving the pure product behind). Shown below is a schematic representation of extraction of a reaction mixture with water. The alkene is the desired product. Will extraction with water (aqueous extraction) extract the product from the mixture or will it extract the undesired by- products and other impurities from the mixture? Reaction: OH conc. H,SO, • H,O heat

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Alkynes

Alkynes are organic compounds that contain at least one triple bond between carbon-carbon atoms. They are a series of unsaturated compounds with a general molecular formula, CnH2n-2.