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

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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 a) Al + O 2 → Al 2 O 3 Oxygen atom is balanced by multiplying the coefficient 3 with O 2 and the coefficient 2 with Al 2 O 3 as follows: Al + 3 O 2 → 2 Al 2 O 3 In the next step, Al atom is balanced by multiplying the coefficient 4 with Al in the reactant part as follows: 4 Al + 3 O 2 → 2 Al 2 O 3 b) NO + O 2 → NO 2 Oxygen atom is balanced by multiplying the coefficient 2 with NO 2 , which is the product, and further, multiplying the coefficient 2 with NO in the reactant part as follows: 2 NO + O 2 → 2 x

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Chemistry In Focus

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BuyFind

Chemistry In Focus

7th Edition

Tro + 1 other

Publisher: Cengage Learning,

ISBN: 9781337399692

Solutions

Chapter

Section

Answer 3

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Chapter

Section

Answer 4

Chapter

Section

Answer 5

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+O2→Al2O3

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

Al+3 O2→2 Al2O3

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

4 Al+3 O2→2 Al2O3

b) NO+O2→NO2

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:

2 NO+O2→2x

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

Chemistry In Focus

Solutions

Chemistry In Focus

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

Explanation of Solution

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