Question

(b) C.H.(g) + O2(g)
CO2(g) + H2O(g) balance ?​

Answer 1

The complete question is:
`CH_(4)(g) + O_(2)(g) \rightarrow CO_(2)(g) + H_(2)O(g)` balance?

Answer:
`CH_(4)(g) + 2O_(2)(g) \rightarrow CO_(2)(g) + 2H_(2)O(g)` is a balanced equation.

Step-by-step explanation:

A chemical equation which contains same number of atoms on both reactant and product side is called a balanced chemical equation.

For example,
`CH_(4)(g) + O_(2)(g) \rightarrow CO_(2)(g) + H_(2)O(g)`

Here, number of atoms on reactant side are as follows.

• C = 1
• H = 4
• O = 4

Number of atoms on product side are as follows.

• C = 1
• H = 2
• O = 3

To balance this equation multiply
`O_(2)` by 2 on reactant side and multiply
`H_(2)O` by 2 on product side. Hence, the equation can be re-written as follows.

`CH_(4)(g) + 2O_(2) \rightleftharpoons CO_(2)(g) + 2H_(2)O(g)`

Here, number of atoms on reactant side are as follows.

• C = 1
• H = 4
• O = 4

Number of atoms on product side are as follows.

• C = 1
• H = 4
• O = 4

Since, there are same number of atoms on both reactant and product side. So, this equation is a balanced equation.

Thus, we can conclude that
`CH_(4)(g) + 2O_(2)(g) \rightarrow CO_(2)(g) + 2H_(2)O(g)` is a balanced equation.