CA ak - hydrophilic , whereas the hydrocarbon tail is...

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Physical Properties In a pure carboxylic acid (in the liquid and solid states), hydrogen bonding can occur between two molecules of acid to produce a dimer .
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Solubility in Water Carboxylic acids are more soluble in water than alcohols, ethers, aldehydes and ketones of comparable molecular weight. They form hydrogen bonds with water molecules through both their C=O and OH groups. Hydroxyl hydrogen is a H-bond donor and a lone pair electron of oxygen act as a H-bond acceptor. R C O O H O H H R C O - O O + H H H oxonium ion - what makes things acid
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Solubility in Water Carboxylic acids fewer than 4 carbons are water soluble. Solubility of carboxylic acids decreases with increases size of hydrocarbon chains. The carboxyl group is polar or
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Unformatted text preview: hydrophilic , whereas the hydrocarbon tail is nonpolar or hydrophobic . As the hydrocarbon tail increases in length, the solubility decreases. Boiling Points For example: propan-1-ol CH 3 CH 2 CH 2 OH 97.2C ethanoic acid CH 3 COOH 118C Carboxylic acids have significantly higher boiling points than other types of organic compounds of comparable molecular weight. They are polar compounds and form very strong intermolecular hydrogen bonds. Odour Methanoic acid and ethanoic acid pungent and irritating odour Butanoic, pentanoic and hexanoic acid unpleasant odour Taste Responsible for the sour taste of fruits example: citric acid in oranges and lemons...
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CA ak - hydrophilic , whereas the hydrocarbon tail is...

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