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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 4, Problem 51E
Textbook Problem
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Balance each chemical equation:

a .  Al + O 2   Al 2 O 3 b .  NO + O 2   NO 2 c .   H 2 + Fe 2 O 3   Fe + H 2 O

Interpretation Introduction

Interpretation:

The chemical equations are to be balanced for the given reactions.

Concept introduction:

A chemical equation is a symbolic depiction of a chemical reaction that contains symbols and formula.

In a chemical reaction, the starting substances on the left side are known as reactants, while the substances on the right side are known as products.

The chemical formula represents the precise number of atoms in a molecule, but not their structural arrangement.

Explanation of Solution

a) Al+O2Al2O3

Oxygen atom is balanced by multiplying the coefficient 3 with O2 and the coefficient 2 with Al2O3 as follows:

Al+3O22Al2O3

In the next step, Al atom is balanced by multiplying the coefficient 4 with Al in the reactant part as follows:

4Al+3O22Al2O3

b) NO+O2NO2

Oxygen atom is balanced by multiplying the coefficient 2 with NO2, which is the product, and further, multiplying the coefficient 2 with NO in the reactant part as follows:

2NO+O22x

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Chapter 4 Solutions

Chemistry In Focus
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