Balancing the chemical equations – Part 2

# Balancing the chemical equations – Part 2

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• Balancing a Chemical Equation
• Symbols of Physical States
• Gaseous
• Liquid
• Aqueous
• Solid
• Summary
• What’s Next?

In the first segment, we learnt about balancing the chemical equations. In this segment, we will revise the concept of balancing the chemical equations with another example.

## How to balance a chemical equation?

To balance a chemical equation we need to follow a few steps. Let us consider the unbalanced equation ?? + ??? → ????? + ?? to understand these steps.

1. Make boxes around the reactants and products as shown in the figure. The element or

compound inside the box cannot be changed.

+ +

F2

H2

Fe2O4

H2O

1. Draw a table with the name of the elements and number of atoms as shown below.
 Elements Number of Atoms in Reactants Number of Atoms in Products Fe 1 3 H 2 2 O 4 1

## Table 1

According to table 1, the number of Oxygen and Iron atoms on the reactants side is

Not Equal to the number of atoms on the products side.

1. Begin by balancing the atom of the element that has the highest number of atoms. Here, it’s Oxygen.

So, multiply ?2? with 4 to balance the number of atoms of Oxygen.

F2

H2

+ 4 +

Fe2O4

H2O

According to table 2, the number of Hydrogen and Iron atoms on the reactants side is

Not Equal to the number of atoms on the products side

 Elements Number of Atoms in Reactants Number of Atoms in Products Fe 1 3 H 8 2 O 4 4

## Table 2

1. Multiply the ?? with 4 to balance the number of atoms of Hydrogen.

F2

H2

+ 4 + 4

Fe2O4

H2O

According to table 3, the number of atoms of Oxygen and Hydrogen is now Equal, but the number of Iron atoms is Not Equal.

 Elements Number of Atoms in Reactants Number of Atoms in Products Fe 1 3 H 8 8 O 4 4

## Table 3

1. To balance the number of Iron atoms, multiply Fe with 3.

3 + 4 + 4

F2

H2

Fe2O4

H2O

According to table 4, the number of atoms of Oxygen, Hydrogen and Iron is now

Equal.

## Related content

 Introduction to Chemical and Physical Changes Chemical Reactions and Equations | Class 10 Chemistry Chapter 1 Balanced and Unbalanced Chemical Equations Balancing the Chemical Equations – Part 1 Oxidation and Reduction Reactions Combination and Decomposition Reactions Displacement and Double Displacement Reactions Displacement and Double Displacement  +91

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