Guest standmatt Posted June 4, 2003 Share Posted June 4, 2003 Ok everybody, I have an assignment due for chemistry really soon about the combustion of gasoline. Correct me if I’m wrong but I believe that the general formula for Gasoline is C8H18. When it reacts with O2 in a combustion reaction it produces CO2, Water, and CO. How does it produce CO? I know that water and carbon dioxide are the standard products for any combustion involving an organic molecule, so where does the CO come from. Is it because it doesn't burn all the way? Anyone with even just an inkling of knowledge on this subject, please respond. (Links are welcome as well) Thanks Link to comment Share on other sites More sharing options...
fafalone Posted June 4, 2003 Share Posted June 4, 2003 Gasoline isn't pure octane. That's why there's different octane ratings (87, 89, 93). Link to comment Share on other sites More sharing options...
JaKiri Posted June 4, 2003 Share Posted June 4, 2003 It produces CO because when there is insufficient oxygen to make CO2, it makes CO instead. Link to comment Share on other sites More sharing options...
aommaster Posted March 16, 2004 Share Posted March 16, 2004 To add on to that, it is called incomplete combustion Link to comment Share on other sites More sharing options...
ed84c Posted March 16, 2004 Share Posted March 16, 2004 A Pt catalytic convertor will however convert this back into CO2 Link to comment Share on other sites More sharing options...
aommaster Posted March 16, 2004 Share Posted March 16, 2004 so THAT'S what it does! I was wondering. Someone told me that it gets rid of nitrogen dioxide and that sort of stuff! Link to comment Share on other sites More sharing options...
YT2095 Posted March 17, 2004 Share Posted March 17, 2004 ed84c said in post # :A Pt catalytic convertor will however convert this back into CO2 no it doesnt how could it without needing to me emptied of carbon every 100 yards or so? it is indeed for the NOx gasses. Link to comment Share on other sites More sharing options...
aommaster Posted March 17, 2004 Share Posted March 17, 2004 ed84c said in post # : A Pt catalytic convertor will however convert this back into CO2 Now i will need to erase my whole memory! Link to comment Share on other sites More sharing options...
Logics88 Posted April 22, 2005 Share Posted April 22, 2005 A Pt catalytic convertor will however convert this back into CO2 I thought this helped create a power to an extent, kind of like Nitrous Oxide, for flat track cars?!??! Link to comment Share on other sites More sharing options...
budullewraagh Posted April 23, 2005 Share Posted April 23, 2005 wait, where do the oxides of nitrogen come from? i know there is the dioxide of sulfur... Link to comment Share on other sites More sharing options...
jdurg Posted April 23, 2005 Share Posted April 23, 2005 The heat and pressure inside the engine cause atmospheric nitrogen to oxidize inside the engine. Also, the fuel being burned isn't pure hydrocarbon. Their are various nitrogen containing compounds in there which wind up turning into the nitrogen oxides. Link to comment Share on other sites More sharing options...
budullewraagh Posted April 23, 2005 Share Posted April 23, 2005 so N2+O2-->2NO, which oxidizes immediately to NO2/N2O4 with the majority as N2O4. out of curiosity, do you know what the SO2 comes from? surely not S(s) or H2S... Link to comment Share on other sites More sharing options...
jdurg Posted April 23, 2005 Share Posted April 23, 2005 SO2 again comes from sulfur in the fuels. There are a lot of sulfur containing organic compounds in petrol and gasoline, so they wind up being included in our engine fuel and when burned they form the sulfur dioxide. Link to comment Share on other sites More sharing options...
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