For Ethanol, change in H vapor = 38.7 kj/mol at 78 degrees Celsius, it's boiling point. Calculate change in S for the vaporization of 1.00 mol ethanol at 78 degrees celsius and 1.00 atm pressure

Question

For Ethanol, change in H vapor = 38.7 kj/mol at 78 degrees Celsius, it's boiling point.  Calculate change in S for the vaporization of 1.00 mol ethanol at 78 degrees celsius and 1.00 atm pressure

DrBob222 · Answer

delta H vap = Tvap x delta S vap. Substitute and solve for delta S vap.