The combustion reaction involves the reactant reacting with the atmospheric oxygen. In the combustion of pentane, carbon dioxide has a coefficient of 5. Thus, option a is correct.
Combustion is a chemical reaction that releases energy and heat when chemically reacts with oxygen. Its products are generally gaseous and include carbon dioxide.
The combustion reaction of pentane is shown as,
C₅H₁₂ + 8O₂ ⇒ 5CO₂ + 6H₂O
Here, one mole of pentane reacted with eight moles of oxygen to produce six moles of oxygen and five moles of carbon dioxide.
Therefore, option A. carbon dioxide has a coefficient of five.
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Your question is incomplete, but most probably your full question was, In the equation for the combustion of pentane, the coefficient of carbon dioxide is?
