Question

Which type of process is evaporation : exothermic or endothermic?

Answer 1

• Evaporation is the process in which a liquid changes to vapours even below its boiling point.
• Exothermic reactions are those in which heat is released after the completion of the reaction.
• Endothermic reactions are those reactions in which some form of energy as heat is supplied for the completion of the reaction.
• Evaporation is an endothermic reaction because water molecules must absorb heat from the surroundings to increase their kinetic energy and change them to vapours.