Combustion vs. Cellular Respiration

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Helen Struble 2F
Posts: 97
Joined: Sat Aug 24, 2019 12:17 am

Combustion vs. Cellular Respiration

Postby Helen Struble 2F » Sun Jan 26, 2020 4:14 pm

Theoretically, is the enthalpy of the reaction for the break down of glucose the same whether it is combusted or broken down in a more controlled manner like in cellular respiration?

Ritu Gaikwad 2E
Posts: 52
Joined: Thu Jul 11, 2019 12:16 am

Re: Combustion vs. Cellular Respiration

Postby Ritu Gaikwad 2E » Sun Jan 26, 2020 4:20 pm

The enthalpy of the reaction for glucose in a combustion reaction versus one with cellular respiration is completely dependent on what the other reactants it is interacting with and the relative bond energies of those reactants and products.

Frank He 4G
Posts: 50
Joined: Tue Nov 12, 2019 12:19 am

Re: Combustion vs. Cellular Respiration

Postby Frank He 4G » Sun Jan 26, 2020 5:09 pm

Ritu Gaikwad 2E wrote:The enthalpy of the reaction for glucose in a combustion reaction versus one with cellular respiration is completely dependent on what the other reactants it is interacting with and the relative bond energies of those reactants and products.


If the net reaction still simplifies down to the same thing, why would the enthalpies be different?

peteryim
Posts: 54
Joined: Sat Sep 07, 2019 12:17 am

Re: Combustion vs. Cellular Respiration

Postby peteryim » Sun Jan 26, 2020 5:13 pm

Technically, since energy is conserved, the change in overall free energy would be the same. However, there are many other factors that come into play, such as entropy.

Shrayes Raman
Posts: 129
Joined: Sat Jul 20, 2019 12:15 am

Re: Combustion vs. Cellular Respiration

Postby Shrayes Raman » Mon Jan 27, 2020 12:01 am

Enthalpy would be the same, but the energy is released in different forms.

Ruby Richter 2L
Posts: 103
Joined: Thu Jul 25, 2019 12:17 am

Re: Combustion vs. Cellular Respiration

Postby Ruby Richter 2L » Mon Jan 27, 2020 3:05 pm

So it would be the same because the path or the details don't matter in the equation?


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