Which of the following statements is not true? A) Combustion of an alkane is an exothermic reaction. B) The heat of combustion of propane is three times that of methane. C) The constitutional isomers of C₇H₁₆ have different heats of combustion from one another D) The products of combustion of an alkane are H₂O and CO₂.

Question

Quizplus · Accepted Answer

The heat of combustion of an alkane does not scale linearly with the number of carbon atoms, making it incorrect to say that the heat of combustion of propane is three times that of methane. The heat of combustion increases with the number of carbon atoms, but not in a simple multiple due to differences in bond energies and molecular structure.

Which of the Following Statements Is Not True