Octane (C8H18) reacts with oxygen (O2) to form carbon dioxide (CO2) and water (H2O).

Question

Question

Octane (C8H18) reacts with oxygen (O2) to form carbon dioxide (CO2) and water (H2O). When the equation in balanced, the coefficient of octane is:

C8H18+ O2 --> CO2 + H2O

a.8 b. 16 c.25 d. 2

Answer 1

Answer #1

Combustion reaction of octane is,

2 C8H18 + 25 O2 --------------> 16 CO2 + 18 H2O

Therefore the coefficient of octane is 2.

(d) 2

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Answer 2

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