Is a pretty good estimation for the heat of combustion of nonane. So if I right that in here, 6,125 kiloJoules per mole So that would give us a five here, and then seven and five is 12, so we carry the one, and that gives us 11, so we get 6,125. So for nonane, with one more CH2, we could predict, we could estimate the heat of combusion. Of combustion to 5,471 kiloJoules per one mole.

Terms of the heat of combustion? Well, if you take 4,163 and subtract that from 4,817 that's a difference of 654 kiloJoules. So if you increase by one CH2 group, how much do we increase in Increase the number of carbons, you're gonna increase in The heat of combustion, so more heat is released. Value here, so for hexane it's 4,163 kiloJoules for every one mole of hexane that we combust. And now we're gonna talkĪbout the heat of combustion as the negative change in the enthalpy. So there are four CH2 groups in hexane, and here we have the heat of combustion. So we have six carbons and notice we have two CH3 groups, so here'sĪ CH3 and here's a CH3, so CH3 and CH3. Let me draw out the structure for hexane. In this case we're talking about methane. Is the heat that's released on the complete combustion One mole of methane, you're gonna get 890 kiloJoules of heat. Delta H zero for this reaction is negative 890 kiloJoules per one mole of methane which means one mole of methane, if you combust

You're gonna get CO2 and H2O as the products of a combustion reaction. So if you take methaneĪnd react it with oxygen, you'll get carbon dioxideĪnd water as the products. Alkanes are very unreactive, but they do undergo combustion reactions.

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