Open AccessSystematic errors in an isoperibol solution calorimeter measured with standard reference reactions
Author(s) -
Marthada V. Kilday
Publication year - 1980
Publication title -
journal of research of the national bureau of standards
Language(s) - English
Resource type - Journals
eISSN - 2376-5259
pISSN - 0160-1741
DOI - 10.6028/jres.085.026
Subject(s) - exothermic reaction , calorimeter (particle physics) , endothermic process , enthalpy , calorimetry , hydroxymethyl , aqueous solution , standard enthalpy of reaction , systematic error , reaction calorimeter , thermodynamics , chemistry , materials science , mathematics , computer science , physics , statistics , detector , telecommunications , adsorption
Systematic errors in an isoperibol calorimeter of a widely-used design, amounting to about 0.5 percent of the endothermic enthalpy of solution of SRM 1655 (KCl) in H 2 O, were found to be the result of errors in heat leak corrections due to inadequate stirring and commonly used calorimetric procedures. Other systematic errors were found in measurements of the enthalpy of solution of the exothermic reaction of tris(hydroxymethyl)aminomethane in aqueous HCl solution. Recommended procedures are summarized.