Q. 21

One mole of acetone requires less heat to vaporise than 1 mol of water. Which of the two liquids has a higher enthalpy of vapourisation?

Answer :

o Enthalpy of vapourisation is defined as the heat consumed by a liquid to transform into the gaseous form at a certain pressure and temperature.


o 1 mole of acetone requires less heat than 1 mole of water to vaporize. So, water consumes less heat than the same amount of acetone for vapourisation.


Hence, amongst the two liquids, water has a higher enthalpy of vapourisation (consuming higher heat energy).


Therefore, ∆Hvapourisation (water) > ∆Hvapourisation (acetone).


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Calorimetry - 02 | Mastering important conceptsCalorimetry - 02 | Mastering important conceptsCalorimetry - 02 | Mastering important concepts39 mins
Kinetic Theory of GasesKinetic Theory of GasesKinetic Theory of Gases46 mins
Enthalpy & Heat Capacity | Interactive QuizEnthalpy & Heat Capacity | Interactive QuizEnthalpy & Heat Capacity | Interactive Quiz55 mins
Thermodynamics | Types of EnthalpyThermodynamics | Types of EnthalpyThermodynamics | Types of Enthalpy66 mins
Hess LawHess LawHess Law61 mins
An interesting lecture on EntropyAn interesting lecture on EntropyAn interesting lecture on Entropy63 mins
Heat Transfer - 01 | Mastering important conceptsHeat Transfer - 01 | Mastering important conceptsHeat Transfer - 01 | Mastering important concepts40 mins
Interactive Quiz on Gibbs EnergyInteractive Quiz on Gibbs EnergyInteractive Quiz on Gibbs Energy55 mins
Bond Disassociation Enthalpy | Mastering important conceptsBond Disassociation Enthalpy | Mastering important conceptsBond Disassociation Enthalpy | Mastering important concepts45 mins
Calorimetry - 01 | Mastering important conceptsCalorimetry - 01 | Mastering important conceptsCalorimetry - 01 | Mastering important concepts45 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses