| List of symbols | p. VIII |
| Introduction | p. XI |
| Homogeneous acid-base equilibria and acidity scales in ionic melts | p. 1 |
| Definitions of acids and bases | p. 1 |
| Definitions of particles possessing acid or base properties | p. 1 |
| Definitions of solvents system | p. 5 |
| Hard and soft acids and bases (Pearson's concept) | p. 11 |
| Generalized definition of solvent system. Solvents of kinds I and II | p. 17 |
| Studies of homogeneous acid-base reactions in ionic melts | p. 33 |
| Features of high-temperature ionic solvents as media for Lux acid-base interactions | p. 34 |
| Methods of investigations | p. 37 |
| Ionic solvents based on alkali metal nitrates | p. 48 |
| Molten alkali metal sulfates | p. 64 |
| Silicate melts | p. 67 |
| KCl-NaCl equimolar mixture | p. 69 |
| Oxocompounds of chromium(VI) | p. 69 |
| Oxoacids of molybdenum(VI) | p. 74 |
| Oxocompounds of tungsten(VI) | p. 77 |
| Oxoacidic properties of phosphates | p. 81 |
| Oxoacids of vanadium(V) | p. 84 |
| Oxoacids of boron(III) | p. 87 |
| Acidic properties of Ge(IV) and Nb(V) oxocompounds | p. 89 |
| Molten KCl-LiCl (0.41:0.59) EUTECTIC | p. 91 |
| Molten NaI | p. 93 |
| Other alkaline-metal halides | p. 98 |
| Conclusion | p. 100 |
| Acid-base ranges in ionic melts. Estimation of relative acidic properties of ionic melts | p. 103 |
| The oxobasicity index as a measure of relative oxoacidic properties of high-temperature ionic solvents | p. 112 |
| Oxoacidity scales for melts based on alkali- and alkaline-earth metal halides | p. 118 |
| Conclusion | p. 128 |
| Oxygen electrodes in ionic melts. Oxide ion donors | p. 129 |
| Oxygen electrode reversibility in ionic melts | p. 129 |
| Potentiometric method of study of oxygen electrode reversibility | p. 135 |
| Direct calibration | p. 135 |
| Indirect calibration of oxygen electrodes | p. 137 |
| Experimental results | p. 142 |
| Oxygen-containing melts | p. 142 |
| Melts based on alkali metal halides | p. 148 |
| Melts based on alkali- and alkaline-earth halides | p. 175 |
| KCl-NaCl-NaF eutectic | p. 176 |
| Conclusions | p. 178 |
| Investigations of dissociation of Lux bases in ionic melts | p. 181 |
| Reactions of ionic melts with gases of acidic or base character | p. 182 |
| High-temperature hydrolysis of melts based on alkali metal halides | p. 183 |
| Purification of halide ionic melts from oxide-ion admixtures | p. 188 |
| Behaviour of Lux bases in ionic melts | p. 200 |
| Sodium peroxide, Na[subscript 2]O[subscript 2] | p. 202 |
| Alkali metal carbonates, Me[subscript 2]CO[subscript 3] | p. 206 |
| Alkali metal hydroxides, MeOH | p. 217 |
| Equilibria in "solid oxide-ionic melt" systems | p. 229 |
| Characteristics of oxide solubilities and methods of their determination | p. 229 |
| Parameters describing solubilities of solid substances in ionic solvents | p. 229 |
| Methods of oxide solubility determination | p. 231 |
| Isothermal saturation method | p. 231 |
| Potentiometric titration method | p. 233 |
| Sequential addition method | p. 257 |
| Regularities of oxide solubilities in melts based on alkali and alkaline-earth metal halides | p. 265 |
| Molten alkali-metal halides and their mixtures | p. 267 |
| KCl-LiCl (0.41:0.59) eutectic mixture | p. 267 |
| KCl-NaCl (0.50:0.50) equimolar mixture | p. 275 |
| CsCl-KCl-NaCl (0.455:0.245:0.30) eutectic | p. 293 |
| CsBr-KBr (0.66:0.34) melt | p. 305 |
| Molten CsI, 700[degree]C | p. 308 |
| Molten potassium halides | p. 316 |
| Other solvents based on alkali-metal halides | p. 320 |
| Oxide solubilities in melts based on alkali- and alkaline-earth metal halides | p. 326 |
| Solubilities of alkali earth metal carbonates in KCl-NaCl eutectic | p. 337 |
| Conclusion | p. 343 |
| Afterword | p. 347 |
| References | p. 351 |
| Formula Index | p. 373 |
| Subject Index | p. 379 |
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