Chapter 13, Problem 21QRT

(a)

Interpretation Introduction

Interpretation:

The mass of ${\text{NH}}_{\text{4}}\text{Cl }\left(s\right)$ that would have to be added or precipitate to make a saturated solution has to be determined if the given condition is $\text{25}\text{.0 g}{\text{NH}}_{\text{4}}\text{Cl }\left(s\right)$ dissolved in $\text{50}\text{.0 g}{\text{H}}_2\text{O at}{25}^{\text{o}}\text{C}\text{.}$

Concept Introduction:

Saturated solution is the solution that contains maximum quantity of solute dissolved in the solvent. In the given volume of saturated solution amount of solute dissolved in the solvent called solubility. Unsaturated solution is the solution that contains less quantity of solute than saturated solution. Supersaturated solution contains more solute than solute present in the saturated solution.

(b)

Interpretation Introduction

Interpretation:

The mass of ${\text{NH}}_{\text{4}}\text{Cl }\left(s\right)$ that would have to be added or precipitate to make a saturated solution has to be determined if the given condition is $\text{25}\text{.0 g}{\text{NH}}_{\text{4}}\text{Cl }\left(s\right)$ dissolved in $\text{75}\text{.0 g}{\text{H}}_2\text{O at}{25}^{\text{o}}\text{C}\text{.}$

Concept Introduction:

Refer part (a).