   # An aqueous solution of PdCl 2 is electrolyzed for 48.6 seconds, and during this time 0.1064 g of Pd is deposited on the cathode. What is the average current used in the electrolysis? ### Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243

#### Solutions

Chapter
Section ### Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243
Chapter 17, Problem 139CWP
Textbook Problem
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## An aqueous solution of PdCl2 is electrolyzed for 48.6 seconds, and during this time 0.1064 g of Pd is deposited on the cathode. What is the average current used in the electrolysis?

Interpretation Introduction

Interpretation:

The average current used in the electrolysis of PdCl2 is to be calculated.

Concept introduction:

The non-spontaneous reaction takes place in an electrolytic cell in which there occurs conversion of electrical energy into chemical energy and this is used for the electrolysis of a metal.

The charge generated in the cell is calculated as,

Q=It

When electricity is passed through an electrolytic cell, at that time the amount of the substance that is liberated at an electrode is given by,

W=ZQ=ZIt

The value of Z is given as,

Z=Molarmassn×96,485

To determine: The average current used in the electrolysis of PdCl2 .

### Explanation of Solution

Given,

The time period is 48.6s .

The amount of metal deposited is 0.1046g .

The reaction of Pd2+ during electrolysis is,

Pd2++2ePd

For the reduction of one Pd2+ 2 electrons are required.

Molar mass of Palladium is 106.42g/mole

The value of E is given as,

E=Molarmassn

Where,

• n is the number of electrons exchanged.
• E is the equivalent weight.

Substitute the value of the molar mass of Palladium in the above equation as,

E=Molarmassn=106.42gmole2e

The value of Z is given as,

Z=Molarmassn×96,485=E96,485Cmolee

Where,

• Z is the electrochemical equivalent.

Substitute the value of E in the above equation as,

Z=E96,485Cmolee=106

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