Premium
SOME ENERGY RELATIONS IN THE SYSTEMS PbO‐B 2 O 3 AND PbO‐SiO 2 *
Author(s) -
Shartsis L.,
Newman E. S.
Publication year - 1948
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1948.tb14297.x
Subject(s) - isothermal process , nitric acid , calorimeter (particle physics) , standard enthalpy of formation , amorphous solid , analytical chemistry (journal) , bottle , chemistry , mineralogy , materials science , thermodynamics , inorganic chemistry , organic chemistry , composite material , optics , physics , detector
A bstract Heats of solution of a series of glasses in the system PbO‐B 2 O 3 were measured in 2 N nitric acid with a simple vacuum‐bottle calorimeter. Heats of solution of a series of glasses in the system PbO‐SiO 2 ranging in composition from 6 to 35% of SiO 2 were measured in a mixture of HF and 2.5 N nitric acid with an electrically calibrated isothermal jacket calorimeter. From these data and heats of fusion available in the literature, calculations were made of the heats of reaction of the component oxides in either amorphous or crystalline states in forming glasses in these systems.