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Combustion vs. Cellular Respiration

Posted: Sun Jan 26, 2020 4:14 pm
by Helen Struble 2F
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?

Re: Combustion vs. Cellular Respiration

Posted: Sun Jan 26, 2020 4:20 pm
by Ritu Gaikwad 2E
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.

Re: Combustion vs. Cellular Respiration

Posted: Sun Jan 26, 2020 5:09 pm
by Frank He 4G
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?

Re: Combustion vs. Cellular Respiration

Posted: Sun Jan 26, 2020 5:13 pm
by peteryim
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.

Re: Combustion vs. Cellular Respiration

Posted: Mon Jan 27, 2020 12:01 am
by Shrayes Raman
Enthalpy would be the same, but the energy is released in different forms.

Re: Combustion vs. Cellular Respiration

Posted: Mon Jan 27, 2020 3:05 pm
by Ruby Richter 2L
So it would be the same because the path or the details don't matter in the equation?