The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. HPLC of Formula: C7H5BrF3N, 393-36-2, Name is 4-Bromo-3-(trifluoromethyl)aniline, SMILES is C1=C(N)C=CC(=C1C(F)(F)F)Br, in an article , author is Mahbub, Shamim, once mentioned of 393-36-2.
Interaction of Polymer (Polyvinylpyrrolidone) with Azo Dye (Reactive Yellow): A Physicochemical Study
The influence of polymer, polyvinylpyrrolidone (PVP) on spectral properties of anionic azo dye, reactive yellow (RY) was investigated by UV-Vis spectroscopy in the temperature range of 298-313 K. The change in lambda(max) and absorbance indicated the presence of interaction between anionic dyes and polymer. The binding constant (K-b) of complexation was determined from the Benesi-Hildebrand plot. The K-b value increased with increasing dye concentrations and decreased with the rise of the temperature. The values of Delta G degrees for RY-PVP complexation were found to be negative and these negative values reduce with the enhancement of temperature which indicates that the binding process is more spontaneous at lower temperature. The negative values of Delta S degrees and negative values of Delta H degrees refer a process which is always enthalpy dominated. K-b values showed significant change with the change of pH. The K-b value enhances with the rise of the carbon chain length of the alcohol and reduces with increasing percentages of alcohol. The K-b value decreases at higher electrolyte concentrations and also with the increase of the size of the anion of the electrolyte. The removal of dye from the waste water by the interaction of dye with polymer in the presence of surfactant and salt of higher concentration has also been studied.
But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 393-36-2, you can contact me at any time and look forward to more communication. HPLC of Formula: C7H5BrF3N.