How much CO2 does a gallon of gasoline generate?

Question

Assume the ratio of air/fuel is 14.3 : 1 by volume, normal unleaded fuel for a car, but what is the CO2 in weight. The media quotes CO2 released into atmosphere in (tons), I assume metric. A follow-up is how much volume is 1 lb CO2 at sea level, 72 degrees F?

Answer 1

The density of CO2 is 1.98 kg/m³. The conversion from lb/ft³ to kg/m³ is ~16 so the density in British units is ~0.124 lb/ft³. Thus a pound of CO2 will occupy ~8 ft³.

A typical gallon of gasoline (your results may vary) will release about 19 lb of CO2 when burned.