Chapter 10, Problem 10.34P

Interpretation Introduction

Interpretation:

Among the given oxides, the oxide having the largest solid solubilities in ${\text{Al}}_{\text{2}}{\text{O}}_{\text{3}}$ should be determined.

Concept Introduction:

Solid solubility is defined as the amount of solute that is soluble in solvent considering both the solute and solvent in solid phase.

Factors on which solubility depends is shown below:

1. Temperature: With increase in temperature solubility increase.
2. Polarity: The polarity for solute and solvent should be same.
3. Molecular size.
4. Pressure of solid and liquid solutes.

Calculation of solid solubility having its dependency on ionic radius of ion and metal. The formula is shown below:

  $\frac{{\text{r}}_{\text{ion}}-{\text{r}}_{\text{metal}}}{{\text{r}}_{\text{metal}}}\times 100\%$

Where,

  ${\text{r}}_{\text{ion}}$ is ionic radius of ion in Angstrom.

  ${\text{r}}_{\text{metal}}$ is ionic radius of metal in Angstrom.