Assertion : CH 3 OCH 3 and C 2 H 5 OH has comparable molecular weight but boiling point of C 2 H 5 OH is more than dimethyl ether. Reason : C 2 H 5 OH forms intermolecular Hbonding whi

Question

Assertion : CH 3 ​ OCH 3 ​ and C 2 ​ H 5 ​ OH has comparable molecular weight but boiling point of C 2 ​ H 5 ​ OH is more than dimethyl ether. Reason : C 2 ​ H 5 ​ OH forms intermolecular Hbonding while CH 3 ​ OCH 3 ​ forms intramolecular H -bonding.

TestHub · Accepted Answer

Due to the presence of hydroxyl group ( − OH ) , there is extensive hydrogen bonding between the ethanol molecules ( C 2 ​ H 5 ​ OH ) . But there is no such hydrogen bonding in dimethyl ether (due to absence of -OH group). So boiling point of dimethyl ether is much lower than ethanol.

Chemistry - CHEMICAL BONDING Question with Solution | TestHub

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