EVALUACIÓN DE LAS PÉRDIDAS TÉRMICAS EN CALORIMETRÍA ISOPERIBÓLICA. IMPORTANCIA DE LOS ALREDEDORES EN LA OBTENCIÓN DE CONSTANTES INSTRUMENTALES EVALUATION OF THE THERMAL LEAKAGE IN ISOPERIBOLIC CALORIMETRY. IMPORTANCE OF THE ENVIRONS IN THE OBTAINING OF INSTRUMENTAL CONSTANTS
For three calorimetric units with isolations in PVC, nylon and metal, the heat leakage constant, K, is determined, giving values of 6.50 x10, 6.37 x10 and 2.52 x 10 s respectively. The heat capacity of the system with water for each one of the calorimetric units was determined and values obtained for this constant are of 442.1 JC for the cell with insulation in PVC, 206.7 JC for the cell with insulation of nylon and 408.2 JC for the cell with metallic insulation. 147 REVISTA COLOMBIANA DE QUIMICA, VOLUMEN 34, No. 2 DE 2005 * Departamento de Quimica, Facultad de Ciencias, Universidad Nacional de Colombia, Bogota. Correo electronico: lgiraldogu@unal.edu.co ** Departamento de Quimica, Facultad de Ciencias, Universidad de los Andes, Bogota. Correo electronico: jumoreno@uniandes.edu.co
