Question

physical properties of carboxylic acid

Answer 1

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                               Physical properties of carboxylic acids

(1)Physical state: The first three members (upto 3 carbon atoms) are colourless, pungent smelling liquids. The next six members are oily liquids having unpleasant smell. The higher members are colourless waxy solids.


(2)Solubility: The acids are polar. The lower members of the aliphatic carboxylic acid family (upto C-4) are highly soluble in water. The solubility decreases with the increase in the size of the alkyl group. All carboxylic acids are soluble in alcohol, ether and benzene etc.


(3)Boiling Point: The boiling points of the carboxylic acids increases with molar mass, i.e. an acid containing larger number of C atoms has higher boiling point.

Carboxylic acids have higher boiling point than alcohols of comparable molecular mass.

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Answer 2

Answer:

The typical formula for a carboxylic acid is R-COOH, where R stands for the remaining portion of the molecule to which the carboxyl group is attached. This carboxyl group has a carbon atom that is linked twice to an oxygen atom and once to a hydroxyl group.

Explanation:

• Because there are two electronegative oxygen atoms in carboxylic acid molecules, they are polar molecules.
• Due to the carbonyl group's (C=O) and hydroxyl group's existence, they also take part in hydrogen bonding.
• These substances create dimers when put in nonpolar solvents by the formation of hydrogen bonds between the hydroxyl groups of two different carboxylic acids.
• The size of the compound affects its solubility in water for compounds with the carboxyl functional group. Higher solubility results from smaller compounds (shorter R groups).
• A carboxylic acid often has a boiling point higher than water.
• Since these substances may transfer protons, they are Bronsted-Lowry acids.

To know more about hydrogen bonding, click on the link below:

https://brainly.in/question/5426849

To know more about Bronsted-Lowry acids, click on the link below:

https://brainly.in/question/18125235

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