Question

a) Explain step wise procedure to balance the chemical equation
for combustion of propane.​

Answer 1

Answer:

The balanced equation for combustion of propane is: C3H8 + 5O2 = 3CO2 + 4H2O. oxygen molecules are broken, while the bonds in carbon dioxide and water molecules are formed.

Answer 2

Answer: $C_3H_8+5O_2\rightarrow 3CO_2+4H_2O$

Explanation:

Combustion is a type of chemical reaction in which fuel is reacted with oxygen to form carbon dioxide and water.

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.

The skeletal equation is:

$C_3H_8+O_2\rightarrow CO_2+H_2O$

First balance the maximum atoms of hydrogen by placing 4 in front of $H_2O$

$C_3H_8+O_2\rightarrow CO_2+4H_2O$

Now balancing carbon by placing 3 in in front of $CO_2$

$C_3H_8+O_2\rightarrow 3CO_2+4H_2O$

Balancing oxygen by placing 5 in in front of $O_2$

The balanced equation will be:

$C_3H_8+5O_2\rightarrow 3CO_2+4H_2O$