Buscar
Mostrando ítems 31-40 de 244
Effect of temperature on the chromatographic retention of ionizable compounds: II. Acetonitrile–water mobile phases
(Elsevier Science, 2005-06)
The retentive behavior of weak acids and bases in reversed-phase liquid chromatography (RPLC) upon changes in column temperature has been theoretically and experimentally studied. The study focuses on examining the temperature ...
Turmeric and RGB analysis: A low-cost experiment for teaching acid-base equilibria at home
(American Chemical Society, 2021-01)
An experimental approach to chemistry is a more meaningful way to learn than the use of textbooks alone. Working in the laboratory helps students understand basic concepts through their active engagement. Here, we present ...
Detection of flow injection analysis with pH gradient by acousto-optic tunable filter based spectrophotometry
(Elsevier Science BvAmsterdamHolanda, 1996)
SCHIFF-BASES OF PYRIDOXAL 5'-PHOSPHATE AND POLYPEPTIDES CONTAINING L-LYSINE - A KINETIC-STUDY
(ELSEVIER SCIENCE BV, 1991)
The apparent rate constants of formation (k1) and hydrolysis (k2), and the apparent equilibrium constant (K(pH)) of the Schiff bases of pyridoxal 5'-phosphate and poly-L-lysine in different degrees of polymerization have ...
Solvation of monoacidic conjugate bases and calculation of acidity constants in aqueous solution
(Trade Science Inc., 2006-05)
With the specific aim of analyzing the interactions of monoacidic conjugate bases with the solvent, equations that describe several reactions and equilibria of ionization were proposed. Furthermore, to prove the validity ...
On the SCF theory of continuum solvent effects representation II. Quantum chemical calculation of thermodynamic properties of some acid‐base equilibria in solution
(1986)
Further developments in the local reaction field (LRF) model of solvent effects are presented. The improved formalism, including dielectric saturation effects, permits a better description of the solvent polarization vector. ...