Enthalpy of combustion

  • #1
I got two definitions for this enthalpy:

I)Heat change when 1 mole of a substance is completely burned or oxidised(My textbook)
2) Heat change when 1 mole of compound is completely burnt or oxidized in oxygen(From a site)

So if I had this reaction:

H2(g)+1/2 O2(g)---->H20

C(s)+O2(g)------>CO2

How can definition number 2 work for these reactions where there is no compounds.
 

Answers and Replies

  • #2
Charles Link
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I got two definitions for this enthalpy:

I)Heat change when 1 mole of a substance is completely burned or oxidised(My textbook)
2) Heat change when 1 mole of compound is completely burnt or oxidized in oxygen(From a site)

So if I had this reaction:

H2(g)+1/2 O2(g)---->H20

C(s)+O2(g)------>CO2

How can definition number 2 work for these reactions where there is no compounds.
In either definition, they could have worded it "when 1 mole of a substance or compound...".
 
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Likes Hydrous Caperilla
  • #3
Okay
 

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