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Another property of carboxylic acids is their boiling points tend to be higher than water. For instance, the boiling point of water is 100 degrees Celsius. Salicylic acid, a carboxylic acid, has a boiling point of 211 degrees Celsius - much higher than water.

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Carboxylic Acid Video

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GCSE Science Chemistry (9-1 Triple) Carboxylic Acids

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The names of carboxylic acids end in ‘-oic acid’

Ethanoic acid

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They are weak acids because this functional group is only partly ionised in solution.

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An example of a carboxylic acid is ethanoic acid
CH3COOH

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making carboxylic acids:
leaving wine open reacts with oxygen turning ethanol to ethanoic acid forming vinegar

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2CH3COOH(aq)+Na2CO3(s) -> 2CH3COONa(aq)+H2O(l)+CO2(g)

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Uses:

1. Manufacturing of soaps need higher fatty acids. Soaps are generally sodium or potassium salts of higher fatty acids such as stearic acid.

2. Food industry uses many organic acids for the production of soft drinks, food products etc. For example, acetic acid is used in making vinegar. Sodium salts of organic acids find application in preservatives.

3. In pharmaceutical industry organic acids are used in many drugs such as aspirin, phenacetin etc.

4. Acetic acids are often used as a coagulant in the manufacturing of rubber.

5. Organic acids find huge application in making dye stuff, perfumes and rayon.

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Example:

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Carboxylic acids are organic compounds that are weak acid and contain -COOH functional group

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Carboxylic acids are organic compounds which are weak so acids

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are in the -COOH functional group

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Ethanoic acid + sodium carbonate -> sodium ethanoate + water + carbon dioxide

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Carboxylic acids react with alcohols to make an ester