Question

`Delta_(vap)S` of acetone is `90.0 J K^(-1) mol^(-1)`. If boiling point of acetone is `50^(@)C`, calculate the heat required for the vaporisation of `1g` of acetone..

Answer 1

`Delta_(vap)H = Delta_(vap)S xx T_(b) = 90.0 xx323 = 29070.0J mol^(-1)`
Heat required to vaporise `1g` acetone
` = (29070)/(50) = 581.4J`