ON SOME FEATURES OF THE TITRATION CURVES OF CARBONIC ACID AND PHOSPHORIC ACID WITH BARYTA
Some hitherto unpublished features of potentiometric and conductometric titration curves of carbonic acid and (ortho) phosphoric acid with baryta have been presented and their significance, in the ligbt of the Mass Action principle anal the Phase Rule, pointed out. During the titration of carbonic a...
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ftzenodo:oai:zenodo.org:6552775 2024-09-15T18:01:35+00:00 ON SOME FEATURES OF THE TITRATION CURVES OF CARBONIC ACID AND PHOSPHORIC ACID WITH BARYTA R. P. MITRA HAKAM. SINGH 1957-02-28 https://doi.org/10.5281/zenodo.6552775 eng eng Zenodo https://doi.org/10.5281/zenodo.6552774 https://doi.org/10.5281/zenodo.6552775 oai:zenodo.org:6552775 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode Journal of Indian Chemical Society, Vol. 34(Feb 1957), 109-113, (1957-02-28) Phosphate titration info:eu-repo/semantics/article 1957 ftzenodo https://doi.org/10.5281/zenodo.655277510.5281/zenodo.6552774 2024-07-26T12:48:34Z Some hitherto unpublished features of potentiometric and conductometric titration curves of carbonic acid and (ortho) phosphoric acid with baryta have been presented and their significance, in the ligbt of the Mass Action principle anal the Phase Rule, pointed out. During the titration of carbonic acid, precipitation of BaCO 3 starts from a point where the conductometric titration curve show; a sharp maximum. Precipitation of the carbonate causes an overlapping of the two stages of disscciation and neutralisation of carbonic acid, and only the total quantity of H 2 CO 3 is indicated by the titrati pn curve. In the case of phosphoric acid, however, three stages of neutralisation, each culminating in a marked inflexion or break in the titration curve, are clearly indicated for additions of baryta corresponding to the first, the second and the third equivalent of the acid. The monohydrogen phosphate starts getting precipitated when exactly one equivalent of the base has been added. Between the second and the third equivalent of the added base, the fr$ and the conductivity remain practically constant. It has been shown that this follows from the Phase Rule remembering that, during the addition of the third equivalent, two solid phases, viz., those of the monohydrogen phosphate and the normal phosphate, coexist. Article in Journal/Newspaper Carbonic acid Zenodo |
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collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
English |
topic |
Phosphate titration |
spellingShingle |
Phosphate titration R. P. MITRA HAKAM. SINGH ON SOME FEATURES OF THE TITRATION CURVES OF CARBONIC ACID AND PHOSPHORIC ACID WITH BARYTA |
topic_facet |
Phosphate titration |
description |
Some hitherto unpublished features of potentiometric and conductometric titration curves of carbonic acid and (ortho) phosphoric acid with baryta have been presented and their significance, in the ligbt of the Mass Action principle anal the Phase Rule, pointed out. During the titration of carbonic acid, precipitation of BaCO 3 starts from a point where the conductometric titration curve show; a sharp maximum. Precipitation of the carbonate causes an overlapping of the two stages of disscciation and neutralisation of carbonic acid, and only the total quantity of H 2 CO 3 is indicated by the titrati pn curve. In the case of phosphoric acid, however, three stages of neutralisation, each culminating in a marked inflexion or break in the titration curve, are clearly indicated for additions of baryta corresponding to the first, the second and the third equivalent of the acid. The monohydrogen phosphate starts getting precipitated when exactly one equivalent of the base has been added. Between the second and the third equivalent of the added base, the fr$ and the conductivity remain practically constant. It has been shown that this follows from the Phase Rule remembering that, during the addition of the third equivalent, two solid phases, viz., those of the monohydrogen phosphate and the normal phosphate, coexist. |
format |
Article in Journal/Newspaper |
author |
R. P. MITRA HAKAM. SINGH |
author_facet |
R. P. MITRA HAKAM. SINGH |
author_sort |
R. P. MITRA |
title |
ON SOME FEATURES OF THE TITRATION CURVES OF CARBONIC ACID AND PHOSPHORIC ACID WITH BARYTA |
title_short |
ON SOME FEATURES OF THE TITRATION CURVES OF CARBONIC ACID AND PHOSPHORIC ACID WITH BARYTA |
title_full |
ON SOME FEATURES OF THE TITRATION CURVES OF CARBONIC ACID AND PHOSPHORIC ACID WITH BARYTA |
title_fullStr |
ON SOME FEATURES OF THE TITRATION CURVES OF CARBONIC ACID AND PHOSPHORIC ACID WITH BARYTA |
title_full_unstemmed |
ON SOME FEATURES OF THE TITRATION CURVES OF CARBONIC ACID AND PHOSPHORIC ACID WITH BARYTA |
title_sort |
on some features of the titration curves of carbonic acid and phosphoric acid with baryta |
publisher |
Zenodo |
publishDate |
1957 |
url |
https://doi.org/10.5281/zenodo.6552775 |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_source |
Journal of Indian Chemical Society, Vol. 34(Feb 1957), 109-113, (1957-02-28) |
op_relation |
https://doi.org/10.5281/zenodo.6552774 https://doi.org/10.5281/zenodo.6552775 oai:zenodo.org:6552775 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.5281/zenodo.655277510.5281/zenodo.6552774 |
_version_ |
1810438705302732800 |