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the claim
The pH of a pyridine hydrochloride solution is calculated using the acid dissociation constant of the pyridinium ion.
the verdict
COMMON KNOWLEDGE
no citation needed for this one
refutedsupported
the weight of evidence
no sources on either side

Calculating the pH of a salt solution of a weak base (such as pyridine hydrochloride) using its acid dissociation constant (pKa) of the conjugate acid (pyridinium ion) is a standard textbook principle of acid-base equilibria, requiring no specialized citation.

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The analysis

The claim states a fundamental, universally taught principle of chemical equilibrium: the pH calculation for a salt derived from a weak base and a strong acid relies on the acid dissociation constant of its conjugate acid. This is common knowledge in chemistry and does not require specific empirical papers to support it.

Everything we examined (12)
  1. Investigation of the lactam side chain length necessary for optimal indenoisoquinoline topoisomerase I inhibition and cytotoxicity in human cancer cell cultures.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  2. Ultrasound enhanced destruction of tetracycline hydrochloride with peroxydisulfate oxidation over FeS/NBC catalyst: Governing factors, strengthening mechanism and degradation pathway.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  3. Scientific opinion on the tolerable upper intake level for vitamin B6.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  4. Effective Removal of Fe (III) from Strongly Acidic Wastewater by Pyridine-Modified Chitosan: Synthesis, Efficiency, and Mechanismpeer-reviewedno side takennot shown: read and judged not to bear on this claim
  5. Third dissociation constant of phosphoric acid in H2O and D2O from 75 to 300 °C at p = 20.4 MPa using Raman spectroscopy and a titanium-sapphire flow cell.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  6. Controlling the photoswitching of 2-(4′-diethylamino-2′-hydroxyphenyl)-1H-imidazo-[4,5-b]pyridine by pHpeer-reviewedno side takennot shown: read and judged not to bear on this claim
  7. Thermodynamics of the dissociation of the pyridinium ionpeer-reviewedno side takennot shown: read and judged not to bear on this claim
  8. Determination of the Acid-Base Dissociation Constant of Acid-Degradable Hexamethylenetetramine by Capillary Zone Electrophoresispeer-reviewedno side takennot shown: read and judged not to bear on this claim
  9. Oxygen Isotope Analyses of Phosphate and Organophosphorus Compounds by Electrospray Ionization Orbitrap Mass Spectrometry.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  10. A Pyridine Amine Extractant for Separation of La3+ and Ce3+ in HNO3 Solution.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  11. Utilization of Dissociation Constant (pKa) Value Perspective of -CH Acid in Electrochemical Synthesis of 4H-Chromene and its Derivativespeer-reviewedno side takennot shown: read and judged not to bear on this claim
  12. Photocatalytic construction of <i>N</i>-acyl-<i>N</i>,<i>O</i>-acetal-linked pyridines <i>via</i> aminocyclopropane ring opening.peer-reviewedno side takennot shown: read and judged not to bear on this claim
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first checked05 Aug 2026
judged → COMMON KNOWLEDGE · 9505 Aug 2026
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