Research for the thermochemical properties of the formation reaction of 2-chloroethylideneaminocarbamic acid ethylester

The enthalpy of reaction of the 2-chloroethylideneaminocarbamic acid ethylester formation from chloroacetaldehyde and hydrazinoformic acid ethylester in ethanol at the temperature of 298.15 K has been determined by a microcalorimeter. Experimental results gave the enthalpy of formation ΔrHmθ=(−16.07±0.079) kJ mol−1, the reaction order of this reaction n=1; the rate constant k=1.190×10−3 s−1 and the free energy of activation ΔG≠θ=89.718 kJ mol−1. The result indicates that the reaction takes place easily at room temperature.