Carboxylic acids. Methanoic acid Muurahaishappo also called formic acid HCOOH.

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Presentation transcript:

Carboxylic acids

Methanoic acid Muurahaishappo also called formic acid HCOOH

Ethanoic acid Etikkahappo vinegar E260 CH 3 COOH

Ethanol is oxidised to become ethanoic acid

Propanoic acid Propionihappo C 2 H 5 COOH Many uses – eg preserving food, curing fungal infections on feet

Butanoic acid Voihappo C 3 H 7 COOH It is found in rancid butter, parmesan cheese, vomit, and body odor and has an unpleasant smell

Pentanoic acid Valeriaanahappo C 4 H 9 COOH Found in the plant valerian which has been used as a herbal sedative

Other carboxylic acids - foods Citric acid E330 Sitruunahappo– lemons, oranges, limes Ascorbic acid E300 – vitamin C Lactic acid, E270 Maitohappo Malic acid Omenahappo Oxalic acid Oksaalihappo

Other carboxylic acids Amino acids – in DNA Salicylic acid – willow bark -> aspirin pain relief Ulcer

Carboxylic acids are used to make esters, a group of smelly (often nice smelling) chemicals Alcohol + carboxylic acid -> ester + water