Question

The entropy of vaporisation of acetic acid is:

• A. less than $21$ cal $de{g}^{-1}$ mole ${}^{-1}$
• B. greater than $21$ Joule $de{g}^{-1}mol{e}^{-1}$
• C. equal to $21$ Joule $de{g}^{-1}mol{e}^{-1}$
• D. greater than $21$cal $de{g}^{-1}mol{e}^{-1}$

Answer 1

Answer: (A)

less than $21$ cal $de{g}^{-1}$ mole ${}^{-1}$

Solution:- (A) less than $21cal/deg-mol$

The entropy of vaporisation of acetic acid is less than that of water.

Its entropy of vaporization is $14.5calde{g}^{-1}mo{l}^{-1}$