May 07, 2021, 10:09:43 PM
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Topic: Oxygen being intercheangeble  (Read 191 times)

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Offline Del

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Oxygen being intercheangeble
« on: March 09, 2021, 04:17:25 PM »
When studying biochesmistry in one of Leningher's volumes I often see oxygen anions being interchangeable with OH. Is this something that went over my head during high school years ago, or do negatively charged oxygens really attract a hydrogen?

Offline chenbeier

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Re: Oxygen being intercheangeble
« Reply #1 on: March 09, 2021, 04:58:11 PM »
No it attracts water.

O2- + H2O => 2 OH-

Offline Babcock_Hall

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Re: Oxygen being intercheangeble
« Reply #2 on: March 09, 2021, 07:07:44 PM »
I am not sure exactly what you mean, but I will take a guess, using palmitic acid and palmitate as an example.  The structure for palmitic acid is CH3(CH2)14CO2H, and the structure for palmitate is CH3(CH2)14CO21-.  When I balance biochemical equations, I might write the structure as palmitic acid.  However, if one ever created palmitic acid in a cell, well over 99% would lose a proton and become palmitate.  That is because both the cytoplasm and the bloodstream are buffered.  I can see how this might be confusing when one first encounters it.

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