Balance the following chemical equations. (AS1)

C₃H₈ + O₂ CO₂ + H₂O

C₃H₈ + O₂ CO₂ + H₂O

Balanced equation: C₃H₈ + 5O₂ 3CO₂ + 4H₂O

Explanation:

⇒Step 1: Write the given unbalanced equation

C₃H₈ + O₂ CO₂ + H₂O

⇒Step 2: Compare the number of atoms of reactants with the number of atoms of products.

⇒Step 3: Now, first we consider the element having unequal no. of atoms on both sides. Thus, first let us consider hydrogen atom. If we multiply 4 in the product (in H₂O), we will get the equal number of atoms as in reactant (in C₃H₈)

⇒Step 4: Write the resulting equation:

C₃H₈ + O₂ CO₂ + 4H₂O

⇒Step 5: Now check whether the equation is balanced or not by comparing the atoms

We find that the equation is not balanced yet. As the number of carbon and oxygen atoms are unequal on the two sides.

First balance the carbon atom.

⇒Step 6: If we multiply 3 in the product (in CO₂), we will get the equal number of atoms as in reactant (in C₃H₈)

⇒Step 7: Write the resulting equation:

C₃H₈ + O₂ 3CO₂ + 4H₂O

⇒Step 8: Now check whether the equation is balanced or not by comparing the atoms.

We find that the equation is not balanced yet. As the number of oxygen atoms are unequal on the two sides.

⇒Step 9: Now, we consider oxygen atoms. If we multiply 5 in the reactant (in O₂), we will get the equal number of atoms as in products (in 3CO₂ and 4H₂O)

⇒Step 10: Write the resulting equation:

C₃H₈ + 5O₂ 3CO₂ + 4H₂O

We find that the equation is balanced now.

⇒Step 11: Write down the final balanced equation:

C₃H₈ + 5O₂ 3CO₂ + 4H₂O