The total enthalpy change associated with forming a solution (ΔHsoln) can be broken down into three distinct processes. Some of these processes have positive ΔH values, and some negative. The overall enthalpy change is their sum. a) List these three processes. b) Which of these three processes are endothermic (ΔH > 0) and explain on the molecular level why this must be so. c) Which of these three processes are exothermic (ΔH < 0) and explain on the molecular level why this must be so.
The total enthalpy change associated with forming a solution (ΔHsoln) can be broken down into three distinct processes. Some of these processes have positive ΔH values, and some negative. The overall enthalpy change is their sum.
a) List these three processes.
b) Which of these three processes are endothermic (ΔH > 0) and explain on the molecular level why this must be so.
c) Which of these three processes are exothermic (ΔH < 0) and explain on the molecular level why this must be so.
A solution is made up of two components: solute and solvent. To form a solution, the solute is added to the solvent. Therefore, in a solution, the solutes are present in less quantity as compared to the solvent.
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