Question

2 C8H18 + 25 O2 → 16 CO2 + 18 H2O

How many moles of CO2 can form from 17.5 moles of octane?

Answer 1

140 mol CO₂.

Step-by-step explanation:

• 2 C₈H₁₈ + 25 O2 → 16 CO₂ + 18 H₂O

In order to convert from moles of octane (C₈H₁₈) into moles of CO₂, we can use a conversion factor with the stoichiometric coefficients of the balanced reaction:

• 17.5 mol C₈H₁₈ *
  `(16molCO_2)/(2molC_8H_(18))` = 140 mol CO₂

140 moles of CO₂ can be produced from 17.5 moles of octane.