Department of Physical Chemistry, University of Szeged, Rerrich Béla tér 1, H-6720, Szeged, Hungary.
Phys Chem Chem Phys. 2010 Mar 14;12(10):2356-64. doi: 10.1039/b920618c. Epub 2010 Jan 15.
It is experimentally proven that the stoichiometry of the tetrathionate-chlorite reaction is 2S4O(2-)6 + 8(1/2)ClO-(2) + 6H2O = 8SO(2-)4 + ClO-(3) + 7(1/2)Cl- + 12H+ near 1:4 molar ratio of the reactants. Re-evaluation of the previously measured front velocity--concentration curves also shows that this stoichiometry along with both the rate equation r = (1.6 x 10(5) M(-3) s(-1) [H+]2 + 3.6 x 10(7) M(-4) s(-1) [H+]3)[S4O(2-)6][ClO-(2)] and the protonation processes existing in the present system allow us to describe the front velocity as a function of the initial concentration of the reactants quantitatively. Some consequences detailed in the conclusions may concern not only uniquely the tetrathionate-chlorite reaction but any front propagation study including H+ as an autocatalyst.
实验证明，在反应物摩尔比为 1:4 左右时，连四硫酸盐-亚氯酸盐反应的化学计量比为 2S4O(2-)6 + 8(1/2)ClO-(2) + 6H2O = 8SO(2-)4 + ClO-(3) + 7(1/2)Cl- + 12H+。重新评估先前测量的前沿速度-浓度曲线也表明，这种化学计量比以及速率方程 r = (1.6 x 10(5) M(-3) s(-1) [H+]2 + 3.6 x 10(7) M(-4) s(-1) [H+]3)[S4O(2-)6][ClO-(2)] 和本系统中存在的质子化过程允许我们定量地将前沿速度描述为反应物初始浓度的函数。结论中详细描述的一些后果不仅可能与连四硫酸盐-亚氯酸盐反应有关，而且可能与包括 H+作为自催化剂的任何前沿传播研究有关。
