A Novel Bromine Calorimetric Determination of the Formation Enthalpies of Sulfides |
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accuracy adjusted Albany approximately aqueous solution ard enthalpies Automation BROMINE CALORIMETRIC DETERMINATION Bureau of Mines calibrated Calorimetric reaction schemes calorimetric scheme calorimetric solvent Chalcocite Cu2S Chemical analyses compositions compounds conventional acid copper and sulfur copper powder copper sulfides covellite CuS Cu(c Cu+++ CuS(c detected Digital dissolution dissolve elemental enthalpies of formation ENTHALPIES OF SULFIDES final product formation enthalpies heating cycle high-temperature indicated no significant INTERIOR interval J. M. Stuve kcal kcal/mol liquid bromine materials metallic impurities method microcomputer mineral sulfides mixture moderately molal NOVEL BROMINE CALORIMETRIC obtained orthorhombic oxidation pct Cu phase precision prepared previously purity reaction period Reagent-grade refractory Report of investigations requisite resist resolution sample signal solution calorimetry Solution enthalpies solution measurement standard stoichiometric amounts SULFIDES By J. M. synthetic technique temperature theoretical thermistor thermodynamic data timer transition metal sulfides uncertainties values voltage X-ray diffraction pattern ΔΗ