Chapter 21, Problem 21.150P

(a)

Interpretation Introduction

Interpretation:

Two concentration cells are made with $\text{Cu}{\left({\text{NO}}_{\text{3}}\right)}_{\text{2}}$ and $\text{Cu}$ bar. $10.0\text{ mL}$ of $0.500\text{ M}$

  ${\text{NH}}_{\text{3}}$ is added in the first concentration cell. The $K_f$ for formation of a complex $\text{Cu}{\left({\text{NH}}_{\text{3}}\right)}_4{}^{2+}$ is to be determined.

Concept Introduction :

An electrolytic cell featuring two half-cells that contain the same electrodes, but varying concentrations is referred to as a concentration cell. A concentration cell works to concentrate the more diluted solution while diluting the more concentrated solution. As the cell approaches equilibrium, a voltage is produced.

(b)

Interpretation Introduction

Interpretation:

  $E_{\text{cell}}$ is to be determined when additional $0.500{\text{ M NH}}_{\text{3}}$ is added in the first half cell.

Concept Introduction :

An electrolytic cell featuring two half-cells that contain the same electrodes, but varying concentrations is referred to as a concentration cell. A concentration cell works to concentrate the more diluted solution while diluting the more concentrated solution. As the cell approaches equilibrium, a voltage is produced.

(c)

Interpretation Introduction

Interpretation:

Two concentration cells are made with $\text{Cu}{\left({\text{NO}}_{\text{3}}\right)}_{\text{2}}$ and $\text{Cu}$ bar. $E_{\text{cell}}$ is to be determined when $0.500\text{ M NaOH}$ is added into the second concentration cell.

Concept Introduction :

An electrolytic cell featuring two half-cells that contain the same electrodes, but varying concentrations is referred to as a concentration cell. A concentration cell works to concentrate the more diluted solution while diluting the more concentrated solution. As the cell approaches equilibrium, a voltage is produced.

(d)

Interpretation Introduction

Interpretation:

Molarity of NaOH is to be determined if the addition of $10.0\text{ mL}$ of it results in $E_{\text{cell}}$ equals to $0.340\text{ V}$

Concept Introduction :

An electrolytic cell featuring two half-cells that contain the same electrodes, but varying concentrations is referred to as a concentration cell. A concentration cell works to concentrate the more diluted solution while diluting the more concentrated solution. As the cell approaches equilibrium, a voltage is produced.