Solution calorimetry of nitrosonium salts
Abstract
The standard enthalpies of formation of crystalline [NO][ClO4], [NO][HSO4], and [NO]2[S2O7] have been determined as 59.0, –680.3, and –1 041.0 kJ mol–1 respectively, based on enthalpies of reaction with aqueous base. The discrepancies between these and some previously published values are discussed in terms of the competing neutralisation and disproportionation reactions of nitrous acid in aqueous medium.