Guest Posted January 15, 2016 Report Share Posted January 15, 2016 (edited) The molar heat of vaporization of water is 40.7 kJ/mol. What is the energy change in 2.0 g water that condenses at 100C?I'd like to know why the answer is exothermic? Edited January 15, 2016 by frank!e Reply Link to post Share on other sites More sharing options...
Vioh Posted January 15, 2016 Report Share Posted January 15, 2016 The molar heat of vaporization of water is 40.7 kJ/mol. What is the energy change in 2.0 g water that condenses at 100C?I'd like to know why the answer is exothermic? Well during condensation, water changes from the gas phase to the liquid phase, thus losing its internal energy. The lost energy will then be released to the environment, resulting in an exothermic reaction.Hope this helps! Reply Link to post Share on other sites More sharing options...
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