carboxyllic acids
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what are carboxylic acids functional group
COOH
carboxylic acids properties
• dissolve in water to form acidic solutions with pH values less than 7 • react with metals to form a salt and hydrogen • react with bases to form a salt and water • react with carbonates to form a salt, water and carbon dioxide, the salts formed in these will end in “anoate” suffix
are carboxylic acids weak or strong, explain
Carboxylic acids are weak acids. This means that their solutions do not contain many hydrogen ions compared with a solution of a strong acid with the same concentration. The pH of a weak acid will be higher than the pH of a strong acid, if their concentrations are the same. In a solution of a strong acid, the molecules are fully ionised, but in a weak acid, very few of the molecules are ionised.
how are esters made
by mixing carboxylic acids with alcohol
esters equation
carboxylic acid + alcohol –> ester + water
example of an ester equation
ethanol + ethanoic acid → ethyl ethanoate + water