Results 21 to 30 of about 59,806 (250)

Aromatic nitrations by mixed acid. Slow liquid-liquid reaction regime [PDF]

open access: yes, 1995
Aromatic nitrations by mixed acid have been selected as a specific case of a heterogeneous liquid-liquid reaction. An extensive experimental programme has been followed using adiabatic and heat-flow calorimetry and pilot reactor experiments, supported by
Alos, M.A.   +6 more
core   +3 more sources

An Innovative Project to Strengthen and Improve the Knowledge Acquisition in the Degree in Chemistry Using e-Learning Tools [PDF]

open access: yes, 2018
Comunicació presentada a EDULEARN2018, 10th International Conference on Education and New Learning Technologies (July 2-4, 2018, Palma, Mallorca, Spain).The subject "Chemistry II (QU910)" is taught at first academic year (second semester) of the Degree ...
Albiol Chiva, Jaume   +10 more
core   +2 more sources

Polyprotic Acids and Beyond—An Algebraic Approach

open access: yesChemistry, 2021
For an N-protic acid–base system, the set of nonlinear equations (i.e., mass action and balance laws) provides a simple analytical solution/formula for any integer N ≥ 1.
Harald Kalka
doaj   +1 more source

Fluorescence and photostability studies of anthracene-9-carboxylic acid in different media

open access: yesInternational Journal of Photoenergy, 2000
Electronic absorption and fluorescence spectra of anthracene-9-carboxylic acid (ANCA) were studied in different homogeneous solvents, binary protic/aprotic solvent mixtures and in heterogeneous solutions of the cationic cetyltrimethyl ammonium bromide ...
M. S. A. Abdel-Mottaleb   +6 more
doaj   +1 more source

Computer-controlled potentiometric acid-base titrations

open access: yesCHIMIA, 1973
A system has been developed for computer-controlled potentiometric acid-base titrations consisting of a HP 2114 B computer, a DM 2022 S digital voltmeter and further peripheral devices.
Urs Keller   +3 more
doaj   +1 more source

Experimental and Theoretical Approaches to Describing Interactions in Natural Cell Membranes Occurring as a Result of Fatal Alcohol Poisoning

open access: yesMembranes, 2021
We propose herein a theoretical model describing the effect of fatal ethanol poisoning on the equilibria between cell membranes and the surrounding ions.
Aneta D. Petelska   +3 more
doaj   +1 more source

Measurement and Modeling of Liquid-Liquid Equilibrium Data of the Ternary system (Water + Butyric Acid + MethylCyclohexanol) at 293.2 K [PDF]

open access: yesشیمی کاربردی روز, 2021
In this research, phase equilibria of the ternary system (water + butyric acid + methylcyclohexanol) was investigated and experimental data of liquid-liquid equilibrium were obtained at 293.2 K and ambient pressure.
Sina Shekarsaraee, Bahareh Bussary
doaj   +1 more source

The anodic oxidation of bases in the solvent m-cresol [PDF]

open access: yes, 1974
The oxidation of bases in the solvent m-cresol was investigated by polarography, voltammetry at the rotating platinum disc electrode and by chronopotentiometry. It was shown that the m-cresolate ion is the electroactive species in this reaction.
Bos, M., Dahmen, E.A.M.F.
core   +2 more sources

Fluid phase equilibria of the reacting mixture in the dimethyl carbonate synthesis from supercritical CO2 [PDF]

open access: yes, 2003
In order to investigate the dimethyl carbonate synthesis from methanol and supercritical CO2, the thermodynamic behaviour of the reacting mixture, i.e. the quaternary methanol/CO2/DMC/water mixture, has to be known.
Badens, François   +3 more
core   +2 more sources

SN1 Reactions in Supercritical Carbon Dioxide in the Presence of Alcohols: the Role of Preferential Solvation [PDF]

open access: yes, 2016
Ethanol (3b) inhibits SN1 reactions of alkyl halides 1 in supercritical carbon dioxide (scCO2) and gives no ethers as products. The unexpected behaviour of alcohols 3 in the reaction of alkyl halides 1 with 1,3-dimethoxybenzene (2) in scCO2 under ...
Bagno   +38 more
core   +2 more sources

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