Question

propane (c3h8) is burned with air. for each case, obtain the balanced reaction equation for complete combustion a. with the theoretical amount of air. b. with 20% excess air. c. with 20% excess air, but only 90% of the propane being con- sumed in the reaction.

Answer 1

Combustion of propane is the exothermic reaction

Combustion reactions are reactions in which a substance reacts with an excess of air or oxygen to form products. the combustion of hydrocarbons in the presence of stoichiometric or excess levels of oxygen forms carbon dioxide and water and with the release of heat the molecular formula of propane is C₃H₈. one mole of propane needs five moles of oxygen for complete oxidation to form carbon dioxide and water.

The balanced equation for combustion of propane is:

C₃H₈(g) + 5O₂(g)→3CO₂(g)+4H₂O(g)

The products are 3 moles of CO₂ and 4 moles of H₂O for every mole of the alkane burnt completely. propane combust completely

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