雨水的pH值是如果大气中二氧化碳增加了一倍?- 江南体育网页版- - - - -地球科学堆江南电子竞技平台栈交换 最近30从www.hoelymoley.com 2023 - 07 - 07 - t17:33:42z //www.hoelymoley.com/feeds/question/7929 https://creativecommons.org/licenses/by-sa/4.0/rdf //www.hoelymoley.com/q/7929 5 雨水的pH值是如果大气中二氧化碳增加了一倍? f.thorpe //www.hoelymoley.com/users/543 2016 - 04 - 30 - t05:35:27z 2017 - 09 - 17 - t03:19:00z < p >自然雨水微酸性(pH = 5.6)因为大气中二氧化碳溶解碳酸。< / p > < p >什么是雨水的pH值,如果大气中二氧化碳倍增至800 ppm ? < / p > //www.hoelymoley.com/questions/7929/-/12206 # 12206 1 答案由弗雷德里克Colbourne雨水的pH值是如果大气中二氧化碳增加了一倍? 弗雷德里克Colbourne //www.hoelymoley.com/users/10940 2017 - 09 - 02 - t13:31:11z 2017 - 09 - 17 - t03:19:00z < blockquote > < p > "削减二氧化碳一半将产生约5.9美元。”

(A valid approach because we expect reversibility in chemistry and physics.)

[pH of 5.9 for 200 ppm $CO_2$]

Atmospheric $CO_2$ of 200 would be about that of the last glacial maximum. So most of the difference between pure water at pH 7 and 5.9 would seem to be other gases dissolved in air.

Side note: A drop to much below 200 ppm $CO_2$ would extinguish all life on Earth except those that live at geothermal vents at the bottom of the ocean, because they do not use $CO_2$.

If a linear relationship is assumed, then if there were 800 ppm of $CO_2$, rain water would have a pH of 5.0. Though, if we assume the log relationship for concentrations that userLTK mentions in the comments, it would be a pH of 5.3.

Bouttes, N., D. Paillard, D. M. Roche, V. Brovkin, and L. Bopp (2011), Last Glacial Maximum CO2 and δ13C successfully reconciled, Geophys. Res. Lett., 38, L02705, doi:10.1029/2010GL044499.

Baidu
map