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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 50E
Textbook Problem
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Balance each chemical equation:

a . PbO + NH 3   Pb + N 2 + H 2 O b . Mg 3 N 2 + H 2 Mg ( OH ) 2 + NH 3 c . C 3 H 8 + O 2   CO 2 + 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) PbO+NH3Pb+N2+H2O

H atom is balanced by multiplying the coefficient 2 with NH3 and the coefficient 3 with H2O as follows:

PbO+2NH3Pb+N2+3H2O

In the next step, O atom is balanced by multiplying the coefficient 3 with PbO and further, Pb atom is balanced by multiplying the coefficient 3 with Pb as follows:

3PbO+2NH33Pb+N2+3H2O

b) Mg3N2+H2OMg(OH)2+NH3

Mg atom is balanced by multiplying the coefficient 3 with Mg(OH)2 as follows:

Mg3N2+H2O3Mg(OH)2+NH3

In the next step, O atom is balanced by multiplying the coefficient 6 with H2O as follows:

Mg3N

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Chapter 4 Solutions

Chemistry In Focus
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