Real-Time Observation of Carbonic Acid Formation in Aqueous Solution
A Glimpse of Wet Carbonic Acid Both carbon dioxide and bicarbonate play extraordinarily widespread roles in biochemical and geochemical reactions. It is surprising therefore that carbonic acid, the intermediate in the water-coupled interconversion of these two compounds, has never been directly char...
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American Association for the Advancement of Science (AAAS)
2009
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Online Access: | http://dx.doi.org/10.1126/science.1180060 https://www.science.org/doi/pdf/10.1126/science.1180060 |
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craaas:10.1126/science.1180060 2024-06-23T07:52:02+00:00 Real-Time Observation of Carbonic Acid Formation in Aqueous Solution Adamczyk, Katrin Prémont-Schwarz, Mirabelle Pines, Dina Pines, Ehud Nibbering, Erik T. J. 2009 http://dx.doi.org/10.1126/science.1180060 https://www.science.org/doi/pdf/10.1126/science.1180060 en eng American Association for the Advancement of Science (AAAS) Science volume 326, issue 5960, page 1690-1694 ISSN 0036-8075 1095-9203 journal-article 2009 craaas https://doi.org/10.1126/science.1180060 2024-06-13T04:01:20Z A Glimpse of Wet Carbonic Acid Both carbon dioxide and bicarbonate play extraordinarily widespread roles in biochemical and geochemical reactions. It is surprising therefore that carbonic acid, the intermediate in the water-coupled interconversion of these two compounds, has never been directly characterized in aqueous solution. Adamczyk et al. (p. 1690 , published online 12 November) have succeeded in glimpsing the elusive acid by inducing an aqueous photoacid (a compound rendered transiently more acidic upon light absorption) to react with dissolved bicarbonate. Using infrared spectroscopy, they show that the carbonic acid product persists for nanoseconds. Analysis of its formation kinetics affords a direct p K a value of 3.5, substantially lower than the effective value derived from observations of the net bicarbonate/carbon dioxide equilibrium. Article in Journal/Newspaper Carbonic acid AAAS Resource Center (American Association for the Advancement of Science) Science 326 5960 1690 1694 |
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AAAS Resource Center (American Association for the Advancement of Science) |
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English |
description |
A Glimpse of Wet Carbonic Acid Both carbon dioxide and bicarbonate play extraordinarily widespread roles in biochemical and geochemical reactions. It is surprising therefore that carbonic acid, the intermediate in the water-coupled interconversion of these two compounds, has never been directly characterized in aqueous solution. Adamczyk et al. (p. 1690 , published online 12 November) have succeeded in glimpsing the elusive acid by inducing an aqueous photoacid (a compound rendered transiently more acidic upon light absorption) to react with dissolved bicarbonate. Using infrared spectroscopy, they show that the carbonic acid product persists for nanoseconds. Analysis of its formation kinetics affords a direct p K a value of 3.5, substantially lower than the effective value derived from observations of the net bicarbonate/carbon dioxide equilibrium. |
format |
Article in Journal/Newspaper |
author |
Adamczyk, Katrin Prémont-Schwarz, Mirabelle Pines, Dina Pines, Ehud Nibbering, Erik T. J. |
spellingShingle |
Adamczyk, Katrin Prémont-Schwarz, Mirabelle Pines, Dina Pines, Ehud Nibbering, Erik T. J. Real-Time Observation of Carbonic Acid Formation in Aqueous Solution |
author_facet |
Adamczyk, Katrin Prémont-Schwarz, Mirabelle Pines, Dina Pines, Ehud Nibbering, Erik T. J. |
author_sort |
Adamczyk, Katrin |
title |
Real-Time Observation of Carbonic Acid Formation in Aqueous Solution |
title_short |
Real-Time Observation of Carbonic Acid Formation in Aqueous Solution |
title_full |
Real-Time Observation of Carbonic Acid Formation in Aqueous Solution |
title_fullStr |
Real-Time Observation of Carbonic Acid Formation in Aqueous Solution |
title_full_unstemmed |
Real-Time Observation of Carbonic Acid Formation in Aqueous Solution |
title_sort |
real-time observation of carbonic acid formation in aqueous solution |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
2009 |
url |
http://dx.doi.org/10.1126/science.1180060 https://www.science.org/doi/pdf/10.1126/science.1180060 |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_source |
Science volume 326, issue 5960, page 1690-1694 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.1180060 |
container_title |
Science |
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326 |
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5960 |
container_start_page |
1690 |
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1694 |
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1802643230242635776 |