Collect. Czech. Chem. Commun. 1986, 51, 1933-1941
https://doi.org/10.1135/cccc19861933

The change in the standard Gibbs energy during the formation of the acid selenites of the alkali metals

Zdeněk Mička and Miroslav Ebert

Department of Inorganic Chemistry, Charles University, 128 40 Prague 2

Abstract

The heterogeneous M2SeO3-H2SeO3-H2O systems (M = Li, Na, K, Rb, Cs) were studied at 298 K using the Filippov eutonic method, yielding the values of the change in the standard Gibbs energy of reactions leading to the formation of the acid selenites of these metals. It follows from the ΔG0 values that the stability of hydrogenselenites and trihydrogenbis(selenites) increases from lithium to cesium and also, except for cesium salts, on transition from MHSeO3 to MH3(SeO3)2.