Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Thermodynamic properties of potassium metasilicate (K2SiO3).

Authors
Brown-RR; Bennington-KO
Source
Thermochim Acta 1987 Dec; 122(2):289-294
NIOSHTIC No.
10006051
Abstract
This paper reports that the standard enthalpy of formation of potassium metasilicate (k2sio3), determined by hydrofluoric acid solution calorimetry, was found to be ahf,298 deg = -363.866 +/- 0.421 Kcal mol-1 (-1522.415 +/- 1.762 Kj mol-1). The standard enthalpy of formation from the oxides was found to be ah298 deg = - 64.786 +/- 0.559 Kcal mol-1 (-271.065 +/- 2.339 Kj mol-1). These experimentally determined data were combined with data from the literature to calculate the Gibbs energies of formation and equilibrium constants of formation over the temperature range of the literature data. The standard enthalpies of formation and Gibbs energies of formation are given as functions of temperature. The standard Gibbs energy of formation is agf,298.15 Deg = -341.705 Kcal mol-1 (-1429.694 Kj mol-1).
Keywords
Chemical-reactions; Chemical-processing; Chemical-kinetics
CODEN
THACAS
Publication Date
19871218
Document Type
OP; Journal Article
Fiscal Year
1988
NTIS Accession No.
NTIS Price
Identifying No.
OP 17-88
Issue of Publication
2
ISSN
0040-6031
NIOSH Division
ALRC
Source Name
Thermochimica Acta
State
OR
TOP