Property of Ethanol Molecular formula: C2H50H Colorless, inflammable liquid Burns with smokeless blue flame Hydroxyl group Hydrogen Bonding Ethylene Hydration and Fermentation Flash point: 13°C Density: 0.789 g/cm3
Property of Gasoline Molecular formula: C8H18 Yellow color, volatile and inflammable liquid Vaporizes at the low temperature Burns with black smoke and red flame Oil refineries (distillation) Flash point: 43°C Density: 0.720 g/cm3
Combustion of Ethanol C2H50H(l) + 3O2(g) 2CO2(g) + 3H20(l) 50 L of Ethanol ≈ 50000cm3 50000 × 0.789 = 39450g Number of Ethanol moles: 39450÷46.08 ≈ 856.120 moles Mole ratio of Ethanol and CO2 gas – 1:2 Number of CO2 moles: 1712.240 moles Amount of CO2 gas produced 1712.240 mol × 44.01g = 75355.6824g ≈ 75.356 kg
Combustion of Gasoline C8H18(l) + 12.5 O2(g) = 8CO2(g) + 9H2O(l) 50L of Gasoline ≈ 50000cm3 50000 × 0.720 = 36000g Number of Gasoline moles: 36000÷114.26 ≈ 315.071 moles Mole ratio of Gasoline and CO2 gas – 1:8 Number of CO2 moles: 2520.568 moles Amount of CO2 gas produced 2520.568mol × 44.01g = 110930.198g ≈ 110.930 kg 35.574 kg MORE!!