scholarly journals Kinetics of oxidation of allyl alcohol by chloramine-T in hydrochloric acid medium: effect of high acid concentrations

1975 ◽  
Vol 28 (4) ◽  
pp. 899 ◽  
Author(s):  
DS Mahadevappa ◽  
HMK Naidu

The kinetics of oxidation of allyl alcohol by chloramine-T in presence of hydrochloric acid(0.15-0.29M) has been studied. At 0�C the rate is first order with respect to chloramine-T, second order in [H+] and independent of the alcohol concentration. The energy of activation and entropy of activation of the reaction have been found to be 55.6 kJ mol -1 and -153 J K-1 respectively. A mechanism is proposed.

1974 ◽  
Vol 27 (6) ◽  
pp. 1203 ◽  
Author(s):  
DS Mahadevappa ◽  
HMK Naidu

The kinetics of oxidation of allyl alcohol by chloramine-T in presence of hydrochloric acid (0.04-0.13M ) has been studied at O�C. The reaction shows first-order dependence on chloramine-T and hydrogen ion concentration and is independent of the concentration of alcohol. The energy and entropy of activation of the reaction have been found to be 12.3 kcal mol-1 and -33.2 e.u. respectively.Ionic strength has very little influence on the rate of reaction. A mechanism in terms of a fast interaction between allyl alcohol and hypochlorous acid formed by the hydrolysis of N-chloro-p-toluenesulphonamide in a slow step is proposed.


Author(s):  
Fathyah Omar Abdulsalam ◽  
Dr. Asha Iyengar T.

Kinetics of oxidative decolorization of alizarin yellow R (AYR) by chloramine-T (CAT) in hydrochloric acid (HCl) medium at 304 K has been investigated spectrophotometrically at λmax520 nm. The reaction showed first-order rate dependence on [CAT] and [AYR]o and fractional order dependence on [HCl]. Stoichiometry of the reaction was found to be 1:1 with respect to the substrate and oxidant respectively. The oxidation products were identified by spectral analysis. Variation of ionic strength had no effect on the rate. Addition of p-toluene sulphonamide (PTS) did not retard the rate of the reaction. Activation parameters have been computed. Probable mechanism and the relevant rate law have been deduced for the observed kinetic results.


1983 ◽  
Vol 36 (1) ◽  
pp. 203 ◽  
Author(s):  
KP Herlihy

Contrary to a previous report the reaction of prop-2-en-1-ol with chloramine-T in 1 M HCl gives 2,3-dichloropropan-1-ol not prop-2-en-1-al. For HCl concentrations of 0.075 M and higher the reaction is of first order each with respect to the concentration of chloramine-T, H+ and Cl- ions, but independent of the alcohol. As chloroamines in these conditions are known to give chlorine, it is proposed that the reaction involves the addition to the unsaturated alcohol of molecular chlorine which is produced by a prior, rate-determining reaction between H+ and Cl- ions with chloramine-T.


Polyhedron ◽  
1983 ◽  
Vol 2 (10) ◽  
pp. 983-986 ◽  
Author(s):  
Kalyan Kali Sengupta ◽  
Biswanath Basu ◽  
Shipra Sengupta ◽  
Sanghamitra Nandi

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