Thermodynamic Properties of Nitryl Chloride

Abstract
The calorimetric heat of formation of gaseous nitryl chloride from the elements at 25° has been found from the heat of the reaction of gaseous nitryl chloride with nitric oxide as confirmed by the heat of the reaction between nitrosyl chloride and nitrogen pentoxide. The value is +3.12±0.16 kcal/mole (endothermic). From the equilibrium constants for the reactions 2NO2+Cl2=2ClNO2 and NO2+ClNO=NO+ClNO2 the entropy of nitryl chloride at 25° has been found to be 65.46±0.6 eu.

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