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Title: The properties of kerosene as a chemical property is flammable with oxygen. Expl Post by: Funkiest on Jun 30, 2015 The properties of kerosene as a chemical property is flammable with oxygen. Explain
Title: Re: The properties of kerosene as a chemical property is flammable with oxygen. Expl Post by: dtimmons95 on Jul 1, 2015 Kerosene isn't just one substance, it's a mixture of 4 hydrocarbons: dodecane (C12H26), tridecane (C13H28), tetradecane (C14H30), and pentadecane (C15H32).
Assuming you get complete combustion of these 4 substances, you'll get: dodecane + oxygen --> carbon dioxide + water. tridecane + oxygen --> carbon dioxide + water tetradecane + oxygen --> carbon dioxide + water pentadecane + oxygen --> carbon dioxide + water Writing this as a chemical equation (rather than word equation) is a bit more challenging. It's a good chance to practise balancing equations! dodecane + oxygen --> carbon dioxide + water. 2 C12H26 + 37 O2 --> 12 CO2 + 13 H2O. Or, in words, for the complete combustion of 2 molecules of dedecane we need 37 molecules of oxygen. This gives us 12 molecules of carbon dioxide and 13 molecules of water. --------------------------------------... I'll leave you to balance the combustion reactions of the other 3 hydrocarbons. Two important things first: 1. You have to have the same number of atoms on both side of the equation. You can't just dissapear (or make) carbon atoms. 2. When balancing an equation you change the number of molecules of a substance, not the substance! For instance, if you have 4 hydrogen atoms and 2 oxygen atoms in your reactants you don't get H4O2, you get 2 H2O (2 molecules of water) |