Question

Balance this equation. If a coefficient of "1" is required, choose "blank" for that box. C3H6 + O2 → CO2 + H2O

Answer 1

2 C3H6 +9 O2 → 6CO2 + 6H2O

Answer 2

Answer: $2C_3H_6+9O_2\rightarrow 6CO_2+6H_2O$

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

This is a combustion reaction in which hydrocarbon burns in the presence of oxygen to form carbon dioxide, water and energy.

The balanced chemical reaction is written as :

$2C_3H_6+9O_2\rightarrow 6CO_2+6H_2O$