Write the combustion reaction when complete combustion occurs at stoichiometric condition. Use the chemical formula of the fuel from a), but neglect elements with molar percentages less than 1%.
a) CH₄(g) + 2O₂(g) ⟶ CO₂(g) + 2H₂O(g)
b) C₆H₁₂O₆(s) + 6O₂(g) ⟶ 6CO₂(g) + 6H₂O(g)
c) C₃H₈(g) + 5O₂(g) ⟶ 3CO₂(g) + 4H₂O(g)
d) C₇H₁₆(l) + 11O₂(g) ⟶ 7CO₂(g) + 8H₂O(g)