Compounds According to the Experimental Results by MBL:
ABSTRACT. The purposes of this study are to investigate the description of scientifically debatable carbonic acid in the Korean high school textbooks, characterize the physical properties of ‘carbonic acid solutions ’ by using an MBL set-up and compare the properties with textual ones. Four differen...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.670.1466 2023-05-15T15:51:56+02:00 Compounds According to the Experimental Results by MBL: The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.670.1466 http://ocean.kisti.re.kr/downfile/volume/chemical/JCGMDC/2010/v54n4/JCGMDC_2010_v54n4_479.pdf?origin%3Dpublication_detail en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.670.1466 http://ocean.kisti.re.kr/downfile/volume/chemical/JCGMDC/2010/v54n4/JCGMDC_2010_v54n4_479.pdf?origin%3Dpublication_detail Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://ocean.kisti.re.kr/downfile/volume/chemical/JCGMDC/2010/v54n4/JCGMDC_2010_v54n4_479.pdf?origin%3Dpublication_detail Carbonic acid Aqueous solution of carbon dioxide Science textbook text ftciteseerx 2016-01-08T17:19:24Z ABSTRACT. The purposes of this study are to investigate the description of scientifically debatable carbonic acid in the Korean high school textbooks, characterize the physical properties of ‘carbonic acid solutions ’ by using an MBL set-up and compare the properties with textual ones. Four different aqueous solutions of carbon dioxide have been prepared and analyzed: naturally aerated aqueous solution, dry ice-dissolving solution, CO2-bubbling solution and commercial carbonic acid water. Experimental findings showed that pH and conductivity of these 4 solutions ranged from 3.85 to 5.66 and from 0.21 µS/cm to 272.1 µS/cm, respectively. Out of these solutions, the dissociation constant(Ka1) of the bubbling solution at room temperature could be calculated to 5.7 × 10-7 which value is comparable to the textual 4.3 × 10-7 within experimental errors, which means that textual compound is not pure carbonic acid but the equilibrated mixture of carbonic acid and the aqueous solution of carbon dioxide. On the other hand, textual analysis showed that most of high school textbooks used carbonic acid as an example of weak acid and buffer solution of the blood but none of them distinguished the carbonic acid from the aqueous solution of carbon dioxide. Only Text Carbonic acid Unknown |
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English |
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Carbonic acid Aqueous solution of carbon dioxide Science textbook |
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Carbonic acid Aqueous solution of carbon dioxide Science textbook Compounds According to the Experimental Results by MBL: |
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Carbonic acid Aqueous solution of carbon dioxide Science textbook |
description |
ABSTRACT. The purposes of this study are to investigate the description of scientifically debatable carbonic acid in the Korean high school textbooks, characterize the physical properties of ‘carbonic acid solutions ’ by using an MBL set-up and compare the properties with textual ones. Four different aqueous solutions of carbon dioxide have been prepared and analyzed: naturally aerated aqueous solution, dry ice-dissolving solution, CO2-bubbling solution and commercial carbonic acid water. Experimental findings showed that pH and conductivity of these 4 solutions ranged from 3.85 to 5.66 and from 0.21 µS/cm to 272.1 µS/cm, respectively. Out of these solutions, the dissociation constant(Ka1) of the bubbling solution at room temperature could be calculated to 5.7 × 10-7 which value is comparable to the textual 4.3 × 10-7 within experimental errors, which means that textual compound is not pure carbonic acid but the equilibrated mixture of carbonic acid and the aqueous solution of carbon dioxide. On the other hand, textual analysis showed that most of high school textbooks used carbonic acid as an example of weak acid and buffer solution of the blood but none of them distinguished the carbonic acid from the aqueous solution of carbon dioxide. Only |
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The Pennsylvania State University CiteSeerX Archives |
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Text |
title |
Compounds According to the Experimental Results by MBL: |
title_short |
Compounds According to the Experimental Results by MBL: |
title_full |
Compounds According to the Experimental Results by MBL: |
title_fullStr |
Compounds According to the Experimental Results by MBL: |
title_full_unstemmed |
Compounds According to the Experimental Results by MBL: |
title_sort |
compounds according to the experimental results by mbl: |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.670.1466 http://ocean.kisti.re.kr/downfile/volume/chemical/JCGMDC/2010/v54n4/JCGMDC_2010_v54n4_479.pdf?origin%3Dpublication_detail |
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Carbonic acid |
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Carbonic acid |
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http://ocean.kisti.re.kr/downfile/volume/chemical/JCGMDC/2010/v54n4/JCGMDC_2010_v54n4_479.pdf?origin%3Dpublication_detail |
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http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.670.1466 http://ocean.kisti.re.kr/downfile/volume/chemical/JCGMDC/2010/v54n4/JCGMDC_2010_v54n4_479.pdf?origin%3Dpublication_detail |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766387302707232768 |