1. When KNO3 is dissolved in water, the resulting solution is significantly colder than the water...
1. When KNO3 is dissolved in water, the resulting solution is significantly colder than the water was originally.
(a) Is the dissolution of KNO3 an endothermic or an exothermic process?
(b) What conclusions can you draw about the intermolecular attractions involved in the process?
(c) Is the resulting solution an ideal solution?
Homework Answers
ANSWER:
(a) Since, the resulting solution is colder than water hence the dissolution of KNO3 is an endothermic process.
(b) The dissolution of KNO3 is an endothermic which means that the energy is absorbed more while breaking the K-N bond and less energy is released due to the attraction between the water and ions formed.
(c) No. Ideal solution is a solution in which there is no change in temperature after mixing.
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