Question

balance this equation plz
SO2+O2+H2O------->H2SO4​

Answer 1

Answer: The balanced equation is $2SO_{2} + O_{2} + 2H_{2}O \rightarrow 2H_{2}SO_{4}$.

Explanation:

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

For example, $SO_{2} + O_{2} + H_{2}O \rightarrow H_{2}SO_{4}$

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

• S = 1
• O = 5
• H = 2

Number of atoms present on product side are as follows.

• S = 1
• O = 4
• H = 2

To balance this equation, multiply $SO_{2}$ by 2 and $H_{2}O$ by 2 on reactant side. Also, multiply $H_{2}SO_{4}$ by 2 on product side.

Hence, the equation can be re-written as follows.

$2SO_{2} + O_{2} + 2H_{2}O \rightarrow 2H_{2}SO_{4}$

Now, the number of atoms present on reactant side are as follows.

• S = 2
• O = 8
• H = 4

Number of atoms present on product side are as follows.

• S = 2
• O = 8
• H = 4

Since, the atoms present on both reactant and product side are equal. Hence, the equation is now balanced.

Thus, we can conclude that the balanced equation is $2SO_{2} + O_{2} + 2H_{2}O \rightarrow 2H_{2}SO_{4}$.