Role of acid‐base and hydration‐dehydration equilibria on reductions of chloral and chloral hydrate
نویسندگان
چکیده
The electrochemical behavior of chloral hydrate in aqueous solutions at various pH values was investigated by using polarography. Reduction takes place two steps: one appears as a small limiting current value that corresponds to the reduction unhydrated form, present less than 3%, and another larger more negative potentials corresponding C-Cl bonds hydrated form. schemes for both forms an oxidation process are proposed. scheme supports stepwise removal chloride ions from form is electroactive its protonated yielding ethanol final product. A rate constant protonation calculated measured pKa data. role hydration-dehydration equilibria involving intermediates, which reduced chloral, concluded based on comparison currents with those 2,2,2-trichloroethanol. alcohol yields, medium range diffusion-limited current, cleavage three bonds. This allowed calculation equilibrium equilibria.
منابع مشابه
Chloral and Chloral Hydrate
These substances were considered by a previous Working Group, in February 1995 (IARC, 1995). Since that time, new data have become available and these have been incorporated into the monograph and taken into consideration in the present evaluation.
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ژورنال
عنوان ژورنال: Electrochemical science advances
سال: 2021
ISSN: ['2698-5977']
DOI: https://doi.org/10.1002/elsa.202100074