Question

the boiling point of diethyl ether is a lower (308 Kelvin) than that of diethyl sulphide (365 Kelvin). why?​

Answer 1

Answer:

Brainiest me

Explanation:

First, there is a bit of ‘hair-splitting here. The bp of pentane is about 36.1º C and that of diethyl ether is 34.6º C, a total of about 1.5º C.

OK, so there is a difference. The molecular weights are nearly the same, differing by 2 g/mol. No matter, diethyl ether has the higher bp.

So, based on molecular weights and the absence of things like hydrogen bonding, you would expect the opposite. So, I would argue that the molecular attraction between pentane molecules is better than between diethyl ether molecules. If you align pentane with pentane the interactions are all CH2-CH2. Similar in diethyl ether except for the most central interaction which is O-O, bound to be repulsive. Even if you shift atoms by one you will get a CH2-O interaction, still not so good. So, this would suggest the bp of diethyl ether will be slightly less than pentane.

Answer 2

the boiling of deithly is 673