Concept explainers
(a)
Interpretation:
The given equation
Concept Introduction:
Balancing the equation:
- There is a Law for conversion of mass in a
chemical reaction i.e., the mass of total amount of the product should be equal to the total mass of the reactants. - First write the skeletal reaction from the given information.
- Then count the number of atoms of each element in reactants as well as products.
- Place suitable coefficients in front of reactants as well as products until the number of atoms on each side (reactants and products) becomes equal.
(a)

Explanation of Solution
Given equation:
Balancing the chemical Equation:
Count the number of atoms on each side of the reaction.
Atom | Reactant side | Product side |
6 | 1 | |
12 | 2 | |
8 | 3 |
Place suitable coefficient before reactants and products and then check for the number of atoms again.
Atom | Reactant side | Product side |
6 | 6 | |
12 | 12 | |
18 | 18 |
The number of atoms of present on each side of the reaction is same. Hence, the balanced equation for the given reaction is
(b)
Interpretation:
The given equation
Concept Introduction:
Refer part (a)
(b)

Explanation of Solution
Given equation:
Balancing the chemical Equation:
Count the number of atoms on each side of the reaction.
Atom | Reactant side | Product side |
2 | 3 | |
11 | 4 | |
4 | 1 |
Place suitable coefficient before reactants and products and then check for the number of atoms again.
Atom | Reactant side | Product side |
12 | 12 | |
16 | 16 | |
4 | 4 |
The number of atoms of present on each side of the reaction is same. Hence, the balanced equation for the given reaction is
(c)
Interpretation:
The given equation
Concept Introduction:
Refer part (a)
(c)

Explanation of Solution
Given equation:
Balancing the chemical Equation:
Count the number of atoms on each side of the reaction.
Atom | Reactant side | Product side |
1 | 1 | |
5 | 1 | |
2 | 4 | |
1 | 4 |
Place suitable coefficient before reactants and products and then check for the number of atoms again.
Atom | Reactant side | Product side |
1 | 1 | |
5 | 5 | |
8 | 8 | |
4 | 4 |
The number of atoms of present on each side of the reaction is same. Hence, the balanced equation for the given reaction is
(d)
Interpretation:
The given equation
Concept Introduction:
Refer part (a)
(d)

Explanation of Solution
Given reaction:
Balancing the chemical Equation:
Count the number of atoms on each side of the reaction.
Atom | Reactant side | Product side |
6 | 3 | |
12 | 6 | |
6 | 3 |
Place suitable coefficient before reactants and products and then check for the number of atoms again.
Atom | Reactant side | Product side |
6 | 6 | |
12 | 12 | |
6 | 6 |
The number of atoms of present on each side of the reaction is same. Hence, the balanced equation for the given reaction is
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Chapter 4 Solutions
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