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Analysing the ethanoic acid concentration in different types of vinegars.  

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Analysing the ethanoic acid concentration in different types of vinegars. Vinegar is a mixture of various acids, ethanoic acid being the most abundant. Most vinegars are made from a sugary liquid, this liquid is fermented to produce ethanol and then oxidised to form ethanoic acid. Different vinegars use different sugary liquids and this could lead to variation between the vinegars. My aim in this investigation is to discover whether the concentration of ethanoic acid varies between vinegars. Vinegar consists mostly of water (bp = 100 degrees C) and ethanoic acid but it also contains many flavour components and other acids in low abundances. From my research I have discovered that the main acids in Vinegar are: Citric Acid C6H8O7 mp = +153 degrees C Tartaric Acid C4H6O6 mp = +170 degrees C Malic Acid C4H6O5 mp = +101-103 degrees C Succinic Acid C4H6O4 mp = +183 bp = +235 degrees C Ethanoic...

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