Calculation of CO2 Emission by a Car

It is interesting to calculate the volume of CO2 emitted by an average car in a year. Suppose the car is driven 10,000 km each year, and while doing so, it consumes 1L of fuel per 10 km hence, it requires 1,000 L a year (a good number of trips to the gas station ). 

If the gasoline is octane (and its CgHjg isomers), then each liter of octane (1,000 cm ) weighs 703 g (the density of octane is 0.703 g/cm ). If we multiply by 1,000 L, we get 703,000 g of octane, which are consumed by this car every year. To calculate how much CO2 is emitted, we have to write the chemical equation for 

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