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AP Chemistry/Unit 4: Chemical Reactions
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Principles of Complete Combustion

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The complete combustion of a hydrocarbon, CxHyC_xH_y, produces carbon dioxide and water. All of the following statements about this reaction are true EXCEPT:

A

The law of conservation of mass applies, ensuring the total mass of reactants equals the total mass of products.

B

All carbon atoms in the hydrocarbon are converted entirely into CO2CO_2 in a complete combustion.

C

The water produced contains all the hydrogen atoms present in the original hydrocarbon, forming H2OH_2O.

D

All the carbon atoms in the hydrocarbon can form carbon monoxide during complete combustion.

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