question_answer

The latent heat of vaporisation of water is \[540\,\text{cal}\,{{\text{g}}^{-1}}\]at \[\text{100}{{\,}^{\text{o}}}\text{C}\text{.}\] What will be the entropy increase when one mole of water is  evaporated at \[\text{100}{{\,}^{\text{o}}}\text{C?}\]

A) \[28\,cal\,{{K}^{-1}}\,mo{{l}^{-1}}\]

B) \[26\,cal\,{{K}^{-1}}\,mo{{l}^{-1}}\]

C)  \[540\,cal\,{{K}^{-1}}mo{{l}^{-1}}\]

D) \[1.82\,cal\,{{K}^{-1}}mo{{l}^{-1}}\]