Thermometric titrimetry Studies of the cerium(IV) oxidation of alpha-mercaptocarboxylic acids.
The cerium(IV) oxidation of thioglycollic, thiolactic and thiomalic acids has been examined by thermometric titration. The titration curves indicate stoichiometries of more than 1 mole of cerium(IV) per mole of alpha-thiol, suggesting possible side-reactions. In the presence of methyl acrylate, however, the expected ratio is observed. The overall heat of each reaction has been derived. Only with a titration method of this kind where allowance can be made for side-reactions can the heats of reaction for these systems be measured.
Alexander
W A
WA
Department of Chemistry University of Strathclyde Glasgow, C.1., Scotland.
Mash
C J
CJ
McAuley
A
A