Problem: A liquid fuel mixture contains 30.05 % hexane (C6H14), 16.05 % heptane (C7H16), and the rest octane (C8H18).What maximum mass of carbon dioxide is produced by the complete combustion of 13.0 kg of this fuel mixture?

Step 1. Find the mass of each gas

$13.0 (\frac{30.05}{100}) = 3.907 kg C_{6} H_{14} 13.0 (\frac{16.05}{100}) = 2.087 kg C_{7} H_{16} 13 - (3.907 + 2.087) = 7.007 kg C_{8} H_{18}$

Step 2. Write the balanced combustion equations

2 C₆H₁₄+ 19 O₂ → 14 H₂O + 12 CO₂

C₇H₁₆+ 11 O₂ → 8 H₂O + 7 CO₂

2 C₈H₁₈+ 25 O₂ → 18 H₂O + 16 CO₂

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A liquid fuel mixture contains 30.05 % hexane (C₆H₁₄), 16.05 % heptane (C₇H₁₆), and the rest octane (C₈H₁₈).

What maximum mass of carbon dioxide is produced by the complete combustion of 13.0 kg of this fuel mixture?

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Stoichiometry concept. You can view video lessons to learn Stoichiometry. Or if you need more Stoichiometry practice, you can also practice Stoichiometry practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Mccurdy's class at UCD.