Abstract
Nuclear magnetic resonance (NMR) was previously established as a reliable method for the determination of the degree of dissociation. The proton magnetic resonance shift has been measured in the full range of the ternary system HNO3—DNO3—H2O—D2O. The two nitric acids are about equally strong at 32°C, but at 0° deuteronitric acid is weaker, at 63° stronger than HNO3.