Academic Journal
Electrochemical determination of acidity level and dissociation of formic acid-water mixtures as solvent
| العنوان: | Electrochemical determination of acidity level and dissociation of formic acid-water mixtures as solvent |
|---|---|
| المؤلفون: | Jaime-Ferrer, J.S., Couallier, Estelle, Rakib, Mohammed, Durand, Gerard |
| المساهمون: | Laboratoire de Génie des Procédés et Matériaux - EA 4038 (LGPM), CentraleSupélec |
| المصدر: | ISSN: 0013-4686 ; Electrochimica Acta ; https://hal.science/hal-00743325 ; Electrochimica Acta, 2007, 52, pp.5773-5780. ⟨10.1016/j.electacta.2007.02.058⟩. |
| بيانات النشر: | HAL CCSD Elsevier |
| سنة النشر: | 2007 |
| المجموعة: | École Centrale Paris: HAL-ECP |
| مصطلحات موضوعية: | Acidity scale, Autoprotolysis constant, Formic acid, Formic acid/water mixtures, Redox function, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, [CHIM.ANAL]Chemical Sciences/Analytical chemistry |
| الوصف: | International audience ; The autoprotolysis constant KHS of formic acid/water mixtures as solvent has been calculated from acid-base potentiometric titration curves. A correlation of the acidity scale pKHS of each medium versus pure water has been implemented owing to the Strehlow R0(H+) lectrochemical redox function. The results show that formic acid/water mixtures are much more dissociated than pure water; such media are sufficiently dissociated to allow electrochemical measures without addition of an electrolyte. It has also been shown that for a same H+ concentration the activity of protons increases with formic acid concentration. For more than 80 wt.% of formic acid the acidity is sufficiently increased to locate the whole acidity scale pKHS in the super acid medium of the generalized acidity scale pHH2O. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | hal-00743325; https://hal.science/hal-00743325; https://hal.science/hal-00743325/document; https://hal.science/hal-00743325/file/Pub_fig_et_tab.pdf |
| DOI: | 10.1016/j.electacta.2007.02.058 |
| الاتاحة: | https://hal.science/hal-00743325 https://hal.science/hal-00743325/document https://hal.science/hal-00743325/file/Pub_fig_et_tab.pdf https://doi.org/10.1016/j.electacta.2007.02.058 |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.4949DCD9 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1016/j.electacta.2007.02.058 |
|---|