BuyFindarrow_forward

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

Solutions

Chapter
Section
BuyFindarrow_forward

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
1 views

. In each of the following reactions, identify which element is being oxidized and which is being reduced by assigning oxidation numbers

a. 2Al ( s ) + 3S ( s ) Al 2 S 3 ( s )    b. CH 4 ( g ) + 2O 2 ( g ) CO 2 ( g ) + 2H 2 O ( g )    c. 2FeO 3 ( s ) + 3C ( s ) 3 CO 2 ( g ) + 4Fe ( s )    d. K 2 Cr 2 O 7 ( aq ) + 14HCl ( aq ) 2KCl ( aq ) + 2CrCl 3 ( s ) + 7H 2 O ( l ) + 3Cl 2 ( g )

Interpretation Introduction

(a)

Interpretation:

The element which one is oxidized and which one is reduced should be identified in the given reaction.

2Al(s)+3S(s)Al2S3(s).

Concept Introduction:

The chemical reaction in which both oxidation and reduction process takes place is known as redox reaction. In this reaction, transfer of electrons takes place among the elements.

Oxidation is the process in which either loss of electrons, oxidation number increases, or loss of hydrogen atoms takes place. An element is oxidized, when oxidation number increases.

Reduction is the process in which either gain of electrons, oxidation number decreases, or gain of hydrogen atoms takes place. An element is reduced, when oxidation number decreases.

Explanation

The given reaction is:

2Al(s)+3S(s)Al2S3(s)

Here, Al2S3 contains Al3+ and S2- ions.

In reaction, oxidation state of aluminium increases that are from 0 to + 3 by losing electron and oxidation of state of sulfur decreases that are from 0 to -2 by gaining electron

Interpretation Introduction

(b)

Interpretation:

The element which one is oxidized and which one is reduced should be identified in the given reaction.

2CH4(g)+2O2(g)CO2(g)+2H2O(g).

Concept Introduction:

The chemical reaction in which both oxidation and reduction process takes place is known as redox reaction. In this reaction, transfer of electrons takes place among the elements.

Oxidation is the process in which either loss of electrons, oxidation number increases, or loss of hydrogen atoms takes place. An element is oxidized, when oxidation number increases.

Reduction is the process in which either gain of electrons, oxidation number decreases, or gain of hydrogen atoms takes place. An element is reduced, when oxidation number decreases.

Interpretation Introduction

(c)

Interpretation:

The element which one is oxidized and which one is reduced should be identified in the given reaction.

4Fe2O3(s)+3C(s)2CO2(g)+4Fe(s).

Concept Introduction:

The chemical reaction in which both oxidation and reduction process takes place is known as redox reaction. In this reaction, transfer of electrons takes place among the elements.

Oxidation is the process in which either loss of electrons, oxidation number increases, or loss of hydrogen atoms takes place. An element is oxidized, when oxidation number increases.

Reduction is the process in which either gain of electrons, oxidation number decreases, or gain of hydrogen atoms takes place. An element is reduced, when oxidation number decreases.

Interpretation Introduction

(d)

Interpretation:

The element which one is oxidized and which one is reduced should be identified in the given reaction.

K2Cr2O7(aq)+14HCl(aq)2KCl(aq)+2CrCl3(s)+7H2O(l)+3Cl2(g).

Concept Introduction:

The chemical reaction in which both oxidation and reduction process takes place is known as redox reaction. In this reaction, transfer of electrons takes place among the elements.

Oxidation is the process in which either loss of electrons, oxidation number increases, or loss of hydrogen atoms takes place. An element is oxidized, when oxidation number increases.

Reduction is the process in which either gain of electrons, oxidation number decreases, or gain of hydrogen atoms takes place. An element is reduced, when oxidation number decreases.

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Chapter 18 Solutions

Show all chapter solutions add

Additional Science Solutions

Find more solutions based on key concepts

Show solutions add

Chylomicrons, a class of lipoprotein, are produced in the live. T F

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

How does HIV confound the human immune system?

Introduction to General, Organic and Biochemistry

Why is ketosis frequently accompanied by acidosis?

Chemistry for Today: General, Organic, and Biochemistry

What impact has recombinant DNA technology had on genetics and society?

Human Heredity: Principles and Issues (MindTap Course List)

24. Name each compound:

Chemistry In Focus

Review. A highway curve forms a section of a circle. A car goes around the curve as shown in the helicopter vie...

Physics for Scientists and Engineers, Technology Update (No access codes included)