Chapter 17, Problem 76E

(a)

Interpretation Introduction

To determine: The compound that precipitates out first when $1.0\text{M}$

${\text{Na}}_{\text{2}}{\text{SO}}_{\text{4}}$ is added slowly to $10.0\text{mL}$ of the solution containing $0.20\text{M}$

${\text{Ca}}^{2+}$ and $0.30\text{M}$

${\text{Ag}}^{+}$ .

(b)

Interpretation Introduction

To determine: The amount of $1.0\text{M}$

${\text{Na}}_{\text{2}}{\text{SO}}_{\text{4}}$ that should be added to $10.0\text{mL}$ of the solution containing $0.20\text{M}$

${\text{Ca}}^{2+}$ and $0.30\text{M}$

${\text{Ag}}^{+}$ to initiate the precipitation.