91Ó°ÊÓ

Solution that is saturated:

The solution has reached saturation until no more solute could be added to the solvent.

Solution with no saturation:

The solution is said to be unsaturated whenever there is a tendency for more solute to dissipate in the solvent.

The following data was available to establish the solution level:

Adding $35gofKF$in $25gof{H}_{2}O$solution.

Evaluate the conversion factor as follows:

$$\begin{gathered} =25\mathrm{g}\text{of}{\mathrm{H}}_2\mathrm{O}×\frac{92\mathrm{g}\mathrm{KF}}{100\mathrm{g}\text{of}{\mathrm{H}}_2\mathrm{O}} \\ =23gKF \end{gathered}$$

As a consequence, the maximum is $23gKF$and the given is $35gKF$. Hence, the solution is saturated.

The following data was available to establish the solution level:

Adding $42gofKF$in$50gof{H}_{2}O$

Evaluate the conversion factor as follows:

$$\begin{gathered} =50\mathrm{g}\text{of}{\mathrm{H}}_2\mathrm{O}×\frac{92\mathrm{g}\mathrm{KF}}{100\mathrm{g}\text{of}{\mathrm{H}}_2\mathrm{O}} \\ =46gKF \end{gathered}$$

As a consequence, the maximum is $46gKF$and the given is $45gKF$. Hence, the solution is unsaturated.

The following data was available to establish the solution level:

Adding $145gofKF$in$150gof{H}_{2}O$

Evaluate the conversion factor as follows:

$$\begin{gathered} =150\mathrm{g}\text{of}{\mathrm{H}}_2\mathrm{O}×\frac{92\mathrm{g}\mathrm{KF}}{100\mathrm{g}\text{of}{\mathrm{H}}_2\mathrm{O}} \\ =138gKF \end{gathered}$$

As a consequence, the maximum is $138gKF$and the given is $150gKF$. Hence, the solution is saturated.