Question

What bonds are broken during the combustion of methane (CH4) to form water and carbon dioxide?

C–H bonds in methane and O–O bonds in oxygen

C–O bonds in carbon dioxide and O–O bonds in oxygen

C–H bonds in methane and H–O bonds in water

H–O bonds in water and C–O bonds in carbon dioxide

Answer 1

C–H bonds in methane and O–O bonds in oxygen.

CH4 +2O2--->CO2 + 2H2O

CH4 has only C-H bonds.
O2 has only O=O bond.

Answer 2

The correct answer is: C–H bonds in methane and O–O bonds in oxygen.

Step-by-step explanation:

During the combustion of methane, methane react with oxygen molecule to give carbon dioxide and water molecule.

`2CH_4+3O_2\rightarrow 2CO_2+2H_2O`

During the course of reaction :

• Bond between C-H atom in methane will be broken down
• Bond between O-O bond will be broken down.

During course of formation of products:

• Bonds between oxygen and carbon atom will formed
• Bonds between oxygen ah hydrogen at will be formed.