If the boiling point of ethanol (molecular weight = 46) is 78°C, the boiling point of diethyl ether (molecular weight = 74) in °C is

 We know that diethyl ether is a highly volatile compound and it has boiling point leads than the ether. It do not have hydrogen bonding also.

So, the boiling point of diethyl ether is ${34}^{0}C$.