Complete the following combustion reaction write your balanced equation two different ways

Arianna M.

asked • 11/20/18

Please answer by today or tomorrow.

1 Expert Answer

This is a combustion reaction. The easiest way to balance combustion reactions is to balance the carbons first, then the hydrogens and finally the oxygens.

C8H18 + O2 ==> CO2 + H2O

Balancing C first you get: C8H18 + O2 ==> 8CO2 + H2O

Balancing H next you get: C8H18 + O2 ==> 8CO2 + 9H2O

Finally, balance O to get: C8H18 + 12.5O2 ==> 8CO2 + 9H2O

Since you have fractions of O2, simply multiply all coefficients by 2 to get....

2C8H18 + 25O2 ===> 16CO2 + 18H2O -> Correctly balanced equation

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