Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Question
In terms of intermolecular forces, what does it mean when we say the enthalpy of solution is positive? What about when it is zero?
Expert Solution
Step 1: Enthalpy of solution is positive meaning.
1. When a solute dissolved in a solvent, solution is formed. So, amount of energy required to form this solution is called Enthalpy of solution.
Hence, If the enthalpy of solution appears Positive (+ΔH)
Than, the meaning is reaction or process is Endothermic.
Eg. NaCl + H2O ------> Na+ + Cl- ΔHSol. = +4kJ mol-1
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