Сombustion Calorimetry and Thermodynamic Functions of Cyanocobalamin

Alexander V. Knyazev, Nataliya N. Smirnova, Anastasiya S. Shipilova, Vera N. Larina, u00d0u0090ndrey N. Shushunov, Svetlana S. Knyazeva

Volume 16 Issue 1

Global Journal of Research in Engineering

In a calorimeter with a static bomb and an isothermal shield, the energy of combustion of the cyanocobalamin has been measured at 298.15 K. Physico-chemical methods established the products of combustion of cyanocobalamin in the conditions of calorimetric experiment. The enthalpy of combustion ΔcH° and the thermodynamic parameters ΔfH°, ΔfG° of the cyanocobalamin at T = 298.15 K and p = 0.1 MPa have been calculated. Thermodynamic parameters ΔfH°, ΔfS° were determined and used to calculate the enthalpy of formation of cyanocobalamin.