Long Chain Hydrocarbon Balancing Equation
Date: Summer 2010
I am working on a marking guide for a grade 12 chemistry
correspondence course. Stuck on the following problem: A saturated
long-chain hydrocarbon undergoes complete combustion. Analysis of the
reaction products reveals that 7 molecules of carbon dioxide and 14
molecules of water vapour are produced for every molecule of the
hydrocarbon that burns. Write a balanced equation for this reaction. I
cannot make the hydrogens balance!
This is more appropriate to a math class permutations and combinations,
than chemistry. You have been pitched a curve ball because cyclic compounds
have not been excluded. Since this medium does not make graphics easily,
but here are my efforts:
The compounds 1,3 - dimethyl cyclopentane has the stoichiometry of C7H14.
There are many other examples that fill that criterion.
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Update: June 2012