How much heat (in kJ) is released when 1.65 mol NaOH(s) is dissolved in water? (The molar heat of solution of NaOH is -445.1 kJ/mol)

1 Answer
Al E.
Dec 30, 2017

This is merely a dimensional analysis of heat evolution upon dissolution of solute in solvent.

Hence,

#1.65"mol" * (-445.1kJ)/("mol") approx -734kJ#

In English, if I mix this much table salt in a volume of distilled water, that much heat is released. In simpler terms, the water will become warmer.

Related questions
See all questions in Calorimetry
Impact of this question
3454 views around the world
You can reuse this answer
Creative Commons License