Level Enthalpy Concept

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Benzene
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Level Enthalpy Concept

Post by Benzene »

When propane burns in oxygen, it produces carbon dioxide and water. Why do chemists ignore oxygen when calculating enthalpy change?
Breaking the bonds in oxygen is necessary for it to react with propane. Doesn’t this process require energy?
I look forward to many tips.
Thanks in advance.
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ChenBeier
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Re: Level Enthalpy Concept

Post by ChenBeier »

It is the result of Hess law

Elements have 0 kJ/mol, so oxygen has.

https://learningcentre.vcc.ca/media/vcc ... mation.pdf
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Benzene
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Re: Level Enthalpy Concept

Post by Benzene »

ChenBeier wrote: ↑Mon Nov 11, 2024 4:54 pm It is the result of Hess law

Elements have 0 kJ/mol, so oxygen has.

https://learningcentre.vcc.ca/media/vcc ... mation.pdf
Hello and thank you for your reply.
Sandro
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