The thermochemical properties of nitrourea and its salts

摘要

Enthalpies of formation and dissolution of nitrourea and its hydrazinium salt are measured thanks to complex use of precision calorimetric methods of burning and dissolution. As a result the enthalpy of formation of an anion of nitrourea is received from two groups of independent data and has made -59.10 ± 0.14 kcalmot'. Enthalpies of formation of sodium and potassium salts of nitrourea in a standard condition are defined on the basis measured their enthalpies of dissolution and received value the enthalpy of formation of an anion of nitrourea. The got value of an enthalpy of formation of an anion of nitrourea allows to measure by a method of dissolution of an enthalpy of formation of metal any salts of nitrourea.