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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 8E
Textbook Problem
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Why is bromine reduced in the following reaction (i.e., in what sense is bromine gaining electrons)?

H 2 +Br 2 2HBr

Interpretation Introduction

Interpretation:

The reason for the statement, “bromine atom is reduced in the given reaction,” is to be explained.

Concept Introduction:

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.

A chemical reaction in which oxidation process and reduction process take place simultaneously is called a redox 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.

Bromine atom has seven valence electrons and partially gains valence electrons to attain the noble gas configuration, gets reduced.

Hydrogen is the less electronegative element. The hydrogen atom has a tendency to partially lose electrons to attain the noble gas configuration

The bromine atom partially shares the valence electrons with the hydrogen atom to form a bromine-hydrogen covalent bond.

Explanation of Solution

Br2 is reduced in the redox reaction because bromine is the more electronegative element and has a tendency to partially gain the electrons to attain the noble gas configuration. It has the capacity to partially gain electrons and form negative ions.

H2 is oxidized in the redox reaction because hydrogen is the less electronegative element. It has the capacity to partially lose electrons and form positive ions. H2 has a tendency to partially lose electrons to attain the noble gas configuration. The bromine atom shares the valence electrons with the hydrogen atom to form a bromine-hydrogen covalent bond.

The equation for the reaction of H2 with Br2 is as.

H2+Br2HBr.

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

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Chapter 14 Solutions

Chemistry In Focus
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