Products of hydrogen ethanol and petrol when burnt (combusted) completely and also when incompletely burnt?

Question

Products of hydrogen ethanol and petrol when burnt (combusted) completely and also when incompletely burnt?

Answer 1

typical products for complete combustion would be Carbon Dioxide, and water

for incomplete combustion you may get some carbon monoxide in addition to carbon dioxide and water

Answer 2

Ethanol pollutes far less than gasoline and heres why:

Cars running on ethanol, which is distilled from agricultural crops and biomass are governed by the same laws of physics as those using petrol in that both fuels emit CO2 as a consequence of combustion, however the crucial difference is that burning ethanol recycles CO2 because it has already been removed from the atmosphere by photosynthesis during the natural growth of agricultural crops, such as corn plants. A corn plant removes CO2 from the atmosphere and uses it to grow and produce cornstarch. The plant is harvested and the cornstarch is fermented into ethanol. The ethanol is burned and the cycle repeats. NO NEW NET CARBON is added to the atmosphere when you use ethanol, unlike gasoline which spews tons of carbon into the atmosphere which has been trapped beneath the earth's surface for millions of years in the form of crude oil. You can burn all the ethanol you want and you are not contributing one iota to global warming. You are simply recycling carbon. And creating demand for ethanol by using it in your car stimulates farmers to plant more corn to meet the demand. More corn means more CO2 is removed from the atmosphere because corn, like all plants, takes in CO2 and gives off oxygen via photosynthesis. So not only are you not adding any new carbon to the air when you use ethanol, you are stimulating the planting of more corn plants which naturally fight global warming via photosynthesis.

Answer 3

Internal combustion is less complete and therefore makes soot, carbon monoxide, nitrogen oxide, sulphur oxide, unburnt fuel and water vapour. In complete combustion there is only soot, CO2 and water vapour.  A forced draft burner [an open flame] is much more complete combustion than  IC.  The amount and types of pollutants varies with the fuel used.  Anhydrous ethanol is cleaner than petrol, but it takes more of it to produce the same power.  Any fuel made from plants grown for the purpose will be CO2 neutral, so vegetable oil, ethanol and processed biomass fuels all meet the criteria of renewable fuels using solar power.

Unfortunately the most efficient and lowest emission type of engine, the steam engine, which is powered by a forced draft burner is totally ignored for any vehicular power.  As the main power to the drive wheels it is not the best, but if used to power a generator to keep the batteries charged as needed in a plug-in electric vehicle, it makes the perfect solution to the problems of steam alone or electric power alone.  A steam-electric hybrid would operate on electricity from the grid for the 80% of  the short-range driving done everyday and the steam engine/generator would take care of the 20% of driving over 25 miles from home.  A lot of miles per gallon of fuel used, very low emissions per mile driven, low cost electricity from the grid being used 80% of the time.  And the car would also be a portable emergency generator in emergencies or on camping trips.

Answer 4

b0gart is correct.  

Also when hydrogen is combusted, the only product is water, and if incomplete then only H2 and water are formed.

Ethanol is cleaner, in that fewer nasties are formed (gasoline produces poly aromatic hydrocarbons that are carcinogenic)

However, with a good catalytic converter after the combustion, the vast majority of the pollution is removed,  However, the greenhouse gases still remain.