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Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692

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BuyFindarrow_forward

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692
Chapter 14, Problem 25E
Textbook Problem
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Draw Lewis structures for each chemical reaction, and identify what is oxidized and what is reduced:

a . C+O 2 CO 2 b . 2Na+Cl 2 2NaCl c . Mg+I 2 MgI 2

Interpretation Introduction

Interpretation:

The Lewis structures each chemical equation is to be drawn and of oxidized and reduced elements are to be identified.

Concept introduction:

Lewis structures are also known as Lewis dot formulas and are diagrams that show the bonding of atoms and the lone pairs of electrons that exist in the molecule.

Oxidation is the addition of an electronegative element or the removal of an electropositive element in a chemical reaction.

Reduction is the addition of an electropositive element or the removal of an electronegative element in a chemical reaction.

An oxidizing agent is a substance that has the capacity to oxidize other substances and get reduced in a chemical reaction.

A reducing agent is a substance that has the capacity to reduce other substances and get oxidized in a chemical reaction.

Explanation of Solution

a) C+O2CO2.

The equation for the reaction of C with O2 is as follows:

C+O2CO2.

An oxidizing agent gains electrons easily and a reducing agent loses electrons easily in a chemical reaction.

C0+O20C+4O22

In this chemical reaction, the oxidation state of C is increased from 0 to +2 and loss of electrons occurs. Therefore, C is oxidized.

In this chemical reaction, the oxidation state of O2 is reduced from +1 to 0 and gain of electrons occurs. Therefore, O2 is reduced.

The Lewis structure of the above redox reaction is as follows:

.

b) 2Na+Cl22NaCl.

The equation for the reaction of Na with Cl2 is as follows:

2Na+Cl22NaCl.

An oxidizing agent gains electrons easily and a reducing agent loses electrons easily in a chemical reaction.

2Na0+Cl202Na+1Cl1

In this chemical reaction, the oxidation state of Na is increased from 0 to +1 and loss of electrons occurs

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Chapter 14 Solutions

Chemistry In Focus
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