CH4 - Carboxylic acids

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Explain the acidity of carboxylic acids.
They are weak acids. This is shown by their reaction with sodium hydrogen carbonate, as CO2 is evolved. They also partially dissociate in water forming the carboxylate ion, which is stabilised by the delocalisation of electrons.
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A benzene ring with a methyl side chain can be oxidised to form a carboxylic acid - conditions?
Alkaline potassium permanganate and heat, then dilute acid (HCl).
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How can benzene be turned into a carboxylic acid?
1. Friedal Crafts Alkylation followed by oxidation using alkaline potassium permanganate, heat then dilute acid (HCl).
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Decarboxylation of c.acids - conditions?
Soda lime and heat.
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The decarboxylation of carboxylic acids will produce a hydrocarbon with...
one less carbon atom in the chain.
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Carboxylic acids can form acid chlorides - conditions?
Either PCl5, PCl3 or SOCl2.
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What is produced when esters are hydrolysed?
A carboxylic acid and an alcohol. IT IS THE REVERSE OF ESTERIFICATION.
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Other cards in this set

Card 2

Front

A benzene ring with a methyl side chain can be oxidised to form a carboxylic acid - conditions?

Back

Alkaline potassium permanganate and heat, then dilute acid (HCl).

Card 3

Front

How can benzene be turned into a carboxylic acid?

Back

Preview of the front of card 3

Card 4

Front

Decarboxylation of c.acids - conditions?

Back

Preview of the front of card 4

Card 5

Front

The decarboxylation of carboxylic acids will produce a hydrocarbon with...

Back

Preview of the front of card 5
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