最近30从www.hoelymoley.com 2023 - 07 - 10 - t12:32:36z //www.hoelymoley.com/feeds/question/19886 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/19886 4 ElnorCat //www.hoelymoley.com/users/20661 2020 - 06 - 28 - t02:09:25z 2020 - 06 - 28 - t16:32:23z

< p >磷酸生物和生物圈的主要角色。In its "abiotic" form, floating around in the oceans, lets say marine oceans to be specific, does it tend to be in the Na₃PO₄ form? If for example a cell floating around in the oceans were to absorb a phosphate from the oceans, would it be the acidic phase (bonded with hydrogen ions, like H₃PO₄) or, a sodium-phosphate (the completely disassociated anion phase seems unlikely.. )

//www.hoelymoley.com/questions/19886/-/19887 # 19887 1 奥斯卡Lanzi //www.hoelymoley.com/users/20607 2020 - 06 - 28 - t16:32:23z 2020 - 06 - 28 - t16:32:23z

< p >目前海水的pH < a href = " https://www.epa.gov/ocean-acidification/understanding-science-ocean-and-coastal-acidification " rel = " nofollow noreferrer " > 8.1 < / >,位于第二和第三之间的离解常数(< a href = " https://en.wikipedia.org/wiki/Phosphoric_acid " rel = " nofollow noreferrer " > 7.20和12.37,分别< / >)。所以大部分的磷酸盐在海洋twice-dissociared形式,如< span class = " math-container " > $ {HPO} \文本_4 ^ {2,}$ < / span >。相比之下,我们的周围血液pH < a href = " https://www.healthline.com/health/ph-of-blood " rel = " nofollow noreferrer " > < / > 7.4,所以我们血液中磷酸的混合物< span class = " math-container " > $ {HPO} \文本_4 ^ {2,}$ < / span >和<跨类= " math-container " > $ {H} _2 \ \文本文本{阿宝}_4 ^ - $ < / span >。< / p > < p >在EPA参考上图,今天指出,略低pH值和在相对过去意味着更大的氢离子浓度的增加。但比这更糟糕的是。因为< a href = " https://en.wikipedia.org/wiki/Buffer_solution " rel = " nofollow noreferrer " >改变pH值加上改变酸的离解< / >包括磷酸,看似小pH值的变化可能意味着更多的酸性物质(在磷酸中,< span class = " math-container " > $ {H} _2 \ \文本文本{阿宝}_4 ^ - $ < / span >和<跨类= " math-container " > $ {HPO} \文本_4 ^ {2,}$ < / span >)在海洋中。< / p >

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