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Explain the following : (a) Dimethyl e...

Explain the following `:`
(a) Dimethyl ether has a lower boiling point (249K) than ethyl alcohol (351K) although both have same molecular masses.
(b) Ethers have low solubility in water but high solubility in conc. `H_(2)SO_(4)`.

Text Solution

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(a) Ethyl alcohol has intermolecular hydrogen bonding whereas no hydrogen bonding is present in dimethyl ether.
(b) The oxygen atom in ethers has two unshared electron pairs and therefore, the oxonium salts are formed with acids. This behaviour is not observed in the case of water. Ethers, therefore, have high solubility in conc. `H_(2)SO_(4)` and low solubility in water.
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