Question

Consider following chemical reaction for the combustion of a fuel such as biodiesel in a diesel combustion engine:

a C₈H₁₇COOCH₃ + b O₂ yields c CO₂ + d H₂O, where a, b, c, and d are integer stoichiometric coefficients.

A) Balance the above chemical reaction using the smallest integer stoichiometric coefficients and clearly write the balanced chemical reaction.

B) Using the stoichiometric coefficients determined in part A), calculate the theoretical molar stoichiometric air to fuel ratio, assuming that there is 20% of O₂ in air. Include all the calculation steps in your answer.

Answer 1

Hope that this solution will help you.

SOLUTION The balanced chemical equation Co Hiz COOCH₃ + 140 10c0 is: + 104₂ A B from the above equation we can see, the stoichiometric ratio between fuel and On is fuel o 0 = 1814 Since air contains 20% so stoichiometric ratio between 0 and air is • air = 20:100 of O air = 105 The stoichiometric ratio between fuel and air is - fuel i air fuel air = 1:(1443) x Oz the fuel ; air = 1:70 aix

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