Question

The surface tension of which of the following liquid is maximum?
(a) C₂H₅OH (b) CH₃OH
(c) H₂O (d) C₆H₆

Answer 1

Answer:

a i hope isa write answer

Answer 2

(c) H₂O

Explanation:

Water has oxygen which has lone pair of electron. This lone pair gets donated to the hydrogen atom of another molecule of water. This is due to vacant orbital in hydrogen. Hence due to the presence of hydrogen bond between two successive molecules of water, the surface tension of water is more.

Benzene does not have any oxygen.

Alcohols usually don’t exhibit as much of hydrogen bond as compared to water. So their surface tension is much lower.

Hence option C is the correct answer.