Question

the number of moles of CO2 molecule formed during combustion reaction of benzene ( C6H6 ) is
(A) 6
(B) 8
(C) 10
(D) 12
and how ???

Answer 1

2C6H6 + 15O2 gives out 12CO2 + 6H20
So the right answer is
option: (D) 12 moles

Answer 2

12 moles of $CO_2$ molecules are formed during combustion reaction of benzene.

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products formed must be equal to the mass of reactants taken.

In order to get the same mass on both sides, the atoms of each element must be balanced on both sides of the chemical equation.

The balanced reaction for the combustion of benzene is:

$2C_6H_6+15O_2\rightarrow 12CO_2+6H_2O$

Thus 12 moles of $CO_2$ molecules are formed during combustion reaction of benzene.

Learn more about combustion reaction:

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