Question

'Stability of a crystal is reflected in the magnitude of its melting point'. Comment. Collect melting points of solid water, ethyl alcohol, diethyl ether and methane from a data book. What can you say about the intermolecular forces between these molecules?

Answer 1

Hi there!

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Answer :

Higher the melting point, more will be the stability of crystals.

Methane has lower melting point because it is non-polar and has least intermolecular forces of attraction.

Diethyl ether is polar, therefore, its melting point is higher than that of methane due to greater intermolecular forces of attraction.

Ethyl alcohol has higher melting point than $CH_{4}$ as well as diethyl ether because molecules of ethyl alcohol are associated with intermolecular hydrogen bonding.

Water has highest melting point because water molecules are associated with intermolecular hydrogen bonding more than ethyl alcohol.

Answer 2

Answer:

this is your answer thanku