TY - JOUR
T1 - The kinetics of the reaction between magnesium and EBT
AU - Koren, Ruth
AU - Perlmutter‐Hayman, Berta
AU - Shinar, Ruth
PY - 1974/1
Y1 - 1974/1
N2 - The kinetics of the reaction between Mg2+ and Eriochrome‐Black‐T (EBT) has been investigated in the pH range between 7.05 and 9.0, in the presence of 12% ethanol. The reaction is found to consist of two parallel paths, one involving the tervalent unprotonated ligand, and one its monoprotonated form. The rate constant for the unprotonated ligand has a “normal” value, whereas that for the protonated form is much lower. The numerical value of the rate constant for the unprotonated ligand obtained from results at a magnesium concentration of 10−3M and a pH up to 9.0 is, however, inconsistent with that obtained from results at [Mg2+] = (1 to 4) × 10−3M and pH up to 8.1. This can be explained, at least partially, if we assume the intermediate MgHD to lose its proton not only to H2O, but also to other bases present in the solution.
AB - The kinetics of the reaction between Mg2+ and Eriochrome‐Black‐T (EBT) has been investigated in the pH range between 7.05 and 9.0, in the presence of 12% ethanol. The reaction is found to consist of two parallel paths, one involving the tervalent unprotonated ligand, and one its monoprotonated form. The rate constant for the unprotonated ligand has a “normal” value, whereas that for the protonated form is much lower. The numerical value of the rate constant for the unprotonated ligand obtained from results at a magnesium concentration of 10−3M and a pH up to 9.0 is, however, inconsistent with that obtained from results at [Mg2+] = (1 to 4) × 10−3M and pH up to 8.1. This can be explained, at least partially, if we assume the intermediate MgHD to lose its proton not only to H2O, but also to other bases present in the solution.
UR - http://www.scopus.com/inward/record.url?scp=84986794788&partnerID=8YFLogxK
U2 - 10.1002/kin.550060105
DO - 10.1002/kin.550060105
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AN - SCOPUS:84986794788
SN - 0538-8066
VL - 6
SP - 39
EP - 50
JO - International Journal of Chemical Kinetics
JF - International Journal of Chemical Kinetics
IS - 1
ER -