Chapter 19, Problem 19.111QP

(a)

Interpretation Introduction

Interpretation:

Diagram for the process of an electrolytically silver-plated spoon in an $AgN{O}_3$ solution has to be sketched.

Concept Information:

Electrochemical cell is a device that is used to either produce electricity from chemical reaction or induce chemical reactions using electric energy.

In all electrochemical cells, oxidation occurs at anode and reduction occurs at cathode.

An anode is indicated by negative sign and cathode is indicated by the positive sign.

Electrons flow in the external circuit from the anode to the cathode.

(b)

Interpretation Introduction

Interpretation:

Time taken (in minutes) to deposit $0.884g$ of $Ag$ on the spoon at a constant current of $18.5mA$ has to be determined.

Concept Information:

From its given mass is,

$\text{Number of moles}\text{=}\frac{\text{Given}\text{mass}}{\text{Molecular}\text{mass}}$

The relationship between current, charge and time can be given as:

$\begin{array}{c}\text{Q}\text{=}\text{T×}\text{t}\\ \\ \text{where,}\\ \\ \text{Q}\text{=}\text{Charge}\left(\text{in}\text{coulombs}\right)\\ \text{I=}\text{Current}\left(\text{in}\text{amperes}\right)\\ \text{t=}\text{Time}\left(\text{in}\text{seconds}\right)\end{array}$