Chapter 19, Problem 19.122SP

(a)

Interpretation Introduction

Interpretation:

The cell reaction for the given cell has to be found and a visual evidence has to be suggested to prove that $\text{Cu}$ is not oxidised to ${\text{Cu}}^{2+}$.  The reason for the formation of white precipitate on addition of $\text{NaOH}$ to the reaction mixture also has to be explained.

Concept Introduction:

Electrolytic cell is an electrochemical device in which electrical energy converted into chemical energy.  A non-spontaneous chemical reaction is initiated by giving electrical energy to the cell. It has two electrodes, anode and cathode.  Anode is having positive charge and at anode oxidation is taking place.  Cathode is having negative charge and at cathode reduction takes place.  The two electrodes are dipped in the same electrolyte.

(b)

Interpretation Introduction

Interpretation:

The cell reaction for the given cell has to be found and a visual evidence has to be suggested to prove that $\text{Cu}$ is not oxidised to ${\text{Cu}}^{2+}$.  The reason for the formation of white precipitate on addition of $\text{NaOH}$ to the reaction mixture also has to be explained.

Concept Introduction:

Electrolytic cell is an electrochemical device in which electrical energy converted into chemical energy.  A non-spontaneous chemical reaction is initiated by giving electrical energy to the cell. It has two electrodes, anode and cathode.  Anode is having positive charge and at anode oxidation is taking place.  Cathode is having negative charge and at cathode reduction takes place.  The two electrodes are dipped in the same electrolyte.

(c)

Interpretation Introduction

Interpretation:

The cell reaction for the given cell has to be found and a visual evidence has to be suggested to prove that $\text{Cu}$ is not oxidised to ${\text{Cu}}^{2+}$.  The reason for the formation of white precipitate on addition of $\text{NaOH}$ to the reaction mixture also has to be explained.

Concept Introduction:

Electrolytic cell is an electrochemical device in which electrical energy converted into chemical energy.  A non-spontaneous chemical reaction is initiated by giving electrical energy to the cell. It has two electrodes, anode and cathode.  Anode is having positive charge and at anode oxidation is taking place.  Cathode is having negative charge and at cathode reduction takes place.  The two electrodes are dipped in the same electrolyte.