Question

Which of the following is a balanced chemical equation?

MgF2 + Li2CO3 ⟶ MgCO3 + LiF CH4 + 2O2 ⟶ CO2 + H 2Al + 6HCl ⟶ 3H2 + AlCl3 P4 + 3O2 ⟶ 2P2O3

Answer 1

The balanced chemical equation is P4+3O2--> 2P2O3

Answer 2

Answer : The correct option is,

`P_4+3O_2\rightarrow 2P_2O_3`

Explanation :

Balanced chemical reaction : It is defined as the number of atoms of individual elements present on reactant side must be equal to the product side.

The given unbalanced chemical reaction is,

`MgF_2+Li_2CO_3\rightarrow MgCO_3+LiF`

`CH_4+2O_2\rightarrow CO_2+H_2`

`2Al+6HCl\rightarrow 3H_2+AlCl_3`

These chemical reactions are the unbalanced reactions because in this reaction, the number of atoms of individual elements present on reactant side are not equal to the product side.

Thus, the balanced chemical reaction will be,

`P_4+3O_2\rightarrow 2P_2O_3`

This chemical reaction is a balanced chemical reaction because in this reaction, the number of atoms of individual elements present on reactant side are equal to the product side.