Q.31.

Question: Draw the products of each combustion reaction.

Verified

Answer

Answer

a. $C H_{3} C H_{2} C H_{3} + 5 O_{2} \overset{F l a m e}{\to} 3 C O_{2} + 4 H_{2} O + H e a t$

1Step 1: Combustion reaction

Combustion is a type of oxidation reaction.

Hydrocarbons burn in the presence of oxygen to produce carbon dioxide and water. The combustion reaction also releases a lot of heat energy.

Due to the release of a lot of heat energy during combustion,

many alkanes are used as fuels in natural gas, gasoline, etc.

The combustion reaction of all hydrocarbons always results in the formation of same products, which are carbon dioxide and water.

2Step 2: Products of the combustion reaction

a. The following reaction is the combustion of propane. It reacts with oxygen to produce carbon dioxide and water, as shown below:

$C H_{3} C H_{2} C H_{3} + 5 O_{2} \overset{F l a m e}{\to} 3 C O_{2} + 4 H_{2} O + H e a t$

b. The following reaction is the combustion of cyclohexane. It also reacts with oxygen to form carbon dioxide and water, as shown below: