# Question c1a92

Jan 20, 2016

YES.

#### Explanation:

The energy of the formation of a solution is divided into three energies (enthalpies $\Delta H$) as shown in the figure below:

$\textcolor{g r a y}{\text{Image source: Zumdahl textbook}}$

The enthalpy is the solution is given by:

$\Delta {H}_{\text{Soln}} = \Delta {H}_{1} + \Delta {H}_{2} + \Delta {H}_{3}$

If $\Delta {H}_{\text{Soln}} < 0$, the solution will form and if DeltaH_("Soln")">>"0# (large positive) the solution will not form.

However, if $\Delta {H}_{\text{Soln}} > 0$ (small positive) the solution will form thanks to the increase in entropy $\Delta S > 0$.

for example, the ${\left(\Delta {H}_{\text{Soln}}\right)}_{N a C l} = 3 \frac{k J}{m o l}$ which is small positive. The solution forms as we know, since $N a C l$ is soluble in water.