1970
DOI: 10.1016/0014-3057(70)90005-4
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The potentiometric titration of weak polyacids

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Cited by 164 publications
(113 citation statements)
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“…17 Empirical theories were proposed to link together experimental parameters such as pH, degree of ionization α, and pK. It is wellknown that the titration of isolated monoprotic acids can be described by the HendersonÀHasselbalch equation, and the corresponding pK a values are easily identifiable.…”
Section: Introductionmentioning
confidence: 99%
“…17 Empirical theories were proposed to link together experimental parameters such as pH, degree of ionization α, and pK. It is wellknown that the titration of isolated monoprotic acids can be described by the HendersonÀHasselbalch equation, and the corresponding pK a values are easily identifiable.…”
Section: Introductionmentioning
confidence: 99%
“…28 Općenito, određivanju monomera u literaturi posvećeno je nedovoljno pažnje, iako obrada protonacijske ravnoteže podrazumijeva (jednadžba (13)) poznavanje njezine točne vrijednosti. Nerijetko se vrijednosti koncentracijskih konstanti ravnoteže na α = 0 proglašavaju standardnim intrinzičkim konstantama protonacije polikiselina čiji su protonirani monomeri neutralni 20,32 premda bi navedene veličine trebale ovisiti o ionskoj jakosti (jednadžba (6)). Kako je već bilo govora, koncentracijske konstante protonacije pozitivno nabijenih kiselina pri α = 0 trebale bi biti neovisne o I c i po vrijednosti bliske .…”
Section: Nagasawa I Surunclassified
“…[19][20][21] Valja napomenuti da koeficijenti aktiviteta H + u otopini i protona na lancu ne moraju biti nužno jednaki. Kako je već bilo govora, ras-podjela protuiona oko nabijene skupine na lancu ne mora biti istovjetna njihovoj raspodjeli oko H + u otopini.…”
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“…Curve of Weak Polyacids I n a previous paper,' it was observed that the increase of the pK (K denoting the apparent dissociation constant) with degree of dissociation a for weak polyacids not exhibiting a conformational transition in the course of titration, could be expressed by a series expansion in a: (1) For aqueous solutions of poly(acry1ic acid) (PAA) in the presence of an excess of monomonovalent salt, a second degree polynomial in 01 was shown to represent the pK change within experimental accuracy. This polynomial also remains a fairly good approximation even in the absence of such an excess.…”
Section: Empirical Approach To T H E Potentiometric Titrationmentioning
confidence: 99%