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 ???

The combustion reaction of benzene :
C6H6 +15/2O2 6CO2 + 3H2O 
Multiplying the equation by 2 :
2C6H6 + 15O2 12CO2 +6H2O
Hence , the number of moles of CO2 produced is 12.

  • 9
Its (d)12 .........because the equation is .......2C6H6 + 15O2 >>>> 12CO2 + 6H2O
  • 1
12
2c6h6+15o2=6h20+12co2
  • 7
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