ΔU = ΔH for biological reactions


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Ashley Garcia 2L
Posts: 33
Joined: Fri Sep 29, 2017 7:05 am

ΔU = ΔH for biological reactions

Postby Ashley Garcia 2L » Mon Jan 22, 2018 3:47 pm

Why does ΔU = ΔH in most biological reactions if ΔU = q + w? Why don't we account for work when calculating the change internal energy (ΔU).

Hannah Guo 3D
Posts: 56
Joined: Fri Sep 29, 2017 7:06 am

Re: ΔU = ΔH for biological reactions

Postby Hannah Guo 3D » Mon Jan 22, 2018 3:52 pm

Since w=-P deltaV and there is no change in volume in the biological system, deltaV=0 and therefore w=0.

Hammad Khan 2B
Posts: 51
Joined: Fri Sep 29, 2017 7:07 am
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Re: ΔU = ΔH for biological reactions

Postby Hammad Khan 2B » Mon Jan 22, 2018 5:48 pm

Same can also be said about pressure as a cell in the body doesn’t change pressure so w=0 in that case. Making .


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