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The Elements of Qualitative Chemical Analysis, vol. 1, parts 1 and 2

Part 2 — Chapter XVI Footnotes INDEX

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Numbers marked (†) refer to subjects illustrated by experiments, heavy numbers refer to tables.

Acetic acid, 98, 101†, 111–114†

Acid ions, systematic analysis for, 299 et seq. groups of, 301

Acids, 81, 82, 100, 104

Acid salts, 103

Alkali group, 158, 159

Alkaline earth group, 158, 162

Aluminate-ion, 172

Aluminium group, 158, 188 et seq., 195

Aluminium hydroxide, 171 et seq., 196

Aluminium-ion, 158, 172, 188 et seq.

Ammonia, complex ions of, 216 et seq., 224 ionization of, 87

Ammonium hydroxide, conductivity of, 77 dissociation of, 160 ionization of, 78†, 114 strength as base, 78†, 79†, 168†

Ammonium-ion, 161

Ammonium salts, dissociation of, 34†, 159 effect on ammonium hydroxide, 168†

Amphoteric acids, group of, 302

Amphoteric hydroxides, 171 et seq., 187, 188, 196

Antimony, ions of, 174

Argenticyanide-ion, 225

Arrhenius's theory of ionization, see Ionization

Arsenic acid, 247, 250, 283

Arsenic group, 158, 210, 242 et seq.

Arsenic, ions of, 158, 174, 242 et seq.

Arsenic pentasulphide, 247

Arsenious sulphide, colloidal, 125†

Association, 19, 64

Aurocyanide-ion, 232

Avogadro's hypothesis, 33, 34

Avogadro-van 't Hoff Hypothesis, 15, 37

Azolitmin, 79

Barium carbonate, as reagent, 193

Barium-ion, 162

Bases, 79†, 81, 105, 106

Basic salts, 106, 194

Bismuth-ion, 158

Boiling-point, 17, 36, 38

Borates, hydrolysis of, 90†

Bromine, 252†

Cadmium-ion, 158 complex ions of, 224, 228† sulphide, 209† et seq.

Calcium-ion, 162

Carbonate group, 302

Carbonic acid, 90, 100

Chemical activity of ions, 72†, 78†, 87†, 232 of acids, 81, 82, 105† of bases, 79†, 81 of molecules, 74, 83, 232 of salts, 74†, 107, 116†

Chemical equilibrium, 90 et seq., 96† and direction of action, 112 and path of action, 235 and physical equilibrium, 139 et seq. of electrolytes, 98, 111–115†

Chemical equilibrium, law of, 91, 94 and ionization of strong electrolytes, 108 factors of, 95† et seq. limitations to, 95

Chemometer, 253

Chloride group, 302

Chloride-ion, oxidation of, 275, 276†

Chlorine, 46, 252†, 275

Chromium-ion, 158, 188 et seq.

Chromic acid, 287

Cobalt-ion, 158, 192

Cobalticyanide-ion, 229

Cobalt sulphide, 192

Colloidal condition, 125† et seq. definition of, 130 relations to analysis, 131, 136† solution theory of, 128 suspension theory of, 129

Colloids, electric charges on, 131† precipitation of, 133† protective action of, 136, 137†

Complex ions, 88, 216 et seq. applications in analysis, 220†, 230† of acid ions, 305 of ammonia, 216† et seq. of cyanide-ion, 225† et seq. of halide ions, 237 of oxide-ion, 238 of sulphide-ion, 238, 246 organic, 238†

Concentration, definition of, 91

Conductivity, 44†, 46, 47†, 49, 51, 56 partial, see Mobilities

Copper, equilibrium with cupric-ion, 258, 264† oxidation of, 257† et seq. solution-tension of, 259†

Copper group, 158, 199 et seq., 210, 216 et seq.

Cupric-ion, complex ions of, 224† equilibrium with copper, 258, 264† reduction of, 257† sulphide, 212

Cuprous-ion, complex ions of, 228†

Cyanide-ion, complex ions of, 88†, 225† et seq., 232

Dialysis, 128

Dielectric constants, 62, 63

Diffusion, of gases, 29† of ions, 59† of solutes, 9†

Dissociation of complex ions, 219† electrolytic, see Ionization gaseous, 34†, 36, 96†

Dry salts, 74†

Electrolysis, 46, 58

Electrolytes, see Ionogens

Electron theory, 42

Equilibrium, see also Chemical equilibrium and Physical equilibrium constants, 95, 98, 233, 236, 298 oxidation and reduction, 258, 265 et seq., 267†, 273 et seq.

Faraday's law, 58

Ferric hydroxide, 127†, 170†

Ferric-ion, 88†, 251†, 252†, 269†

Ferricyanide-ion, 88†, 230†

Ferrocyanide-ion, 88†, 230†

Ferrous-ion, 88†, 251†, 252†, 269†

Formaldehyde, 289† et seq.

Fractional oxidation, 305, 306

Fractional precipitation, 163, 165†, 303

Fractional solution, 304

Freezing-point, 17, 36, 38

Fused salts, 75†

Gold, 158, 242 et seq. colloidal, 126† see also Aurocyanide-ion

Groups of metal ions, 157

Groups of acid ions, 301

Heat, 75, 76†

Heterogeneous equilibrium, see Physical equilibrium

Hydrogen, oxidation of, 277, 278, 280†

Hydrogen chloride, 34, 37, 42, 72†, 73, 84

Hydrogen-ion, action on indicators, 79, 105† chemical activity, 72–74†, 81, 82, 278 et seq. concentration for precipitation by H2S, 213 mobility, 54†, 56

Hydrogen sulphide, ionization of, 199, 245 oxidation of, 251†, 254† precipitation by, 90†, 199† et seq., 203†

Hydrol, 175

Hydrolysis of salts, 127, 178† et seq., 190†

Hydroxide-ion, action on indicators, 78†, 79 chemical activity, 79, 81, 168† mobility, 54†, 56

Indicators, 79, 165, 214

Instability constants, 219, 224, 226

Iodide-ion, 88†, 272†, 305

Iodine, 273, 305

Ionization and chemical activity, 69, 72†, 79†, 90† et seq., 116†, 232 and conductivity, 44†, 77†, 115† and dielectric constants, 62–64 and electron theory, 42 and Faraday's law, 58 and osmotic pressure, 67 and solvents, 61 constants, 98, 100, 104, 106, 108 degree of, 50 exceptional, of certain salts, 115† in stages, 100, 102† of acids, 69, 98, 100, 104, 108 of bases, 69, 105, 106, 108 of colloids, 132 of salts, 69†, 74†, 75†, 107, 108, 115† theory of Arrhenius, 40, 41, 51 theory of Clausius, 51

Ionogens, 69

Ion-product, see Solubility-product

Ions, 42 charges on, 41, 58 combination with solvents, 42, 65 composition of, 69†, 89† migration of, 45†, 53, 54† mobilities of, 56

Kinetic theory, of gases, 26 and osmotic pressure, 26

Lead-ion, 158 sulphide, 212, 213

Light, 76

Litmus, 79

Magnesium hydroxide, 168†

Magnesium-ion, 162

Manganous-ion, 158

Mass action, law of, 93, 96†

Mercuric chloride, 57†, 115†

Mercuric cyanide, 115†, 116†, 231†

Mercuric-ion, 158, 257

Mercurous-ion, 158

Mercury, 257

Methyl orange, 79

Methyl violet, 213

Mobilities of ions, 53†, 56

Molecular weights, 33, 36, 37

Nernst's formula, 261 et seq., 296 et seq.

Nickel-ion, 158 cyanide-ion, 229 sulphide, 192

Nitrate group, 302

Nitric acid, 288†

Organic acids, group of, 302

Organic substances, complex ions of, 238 oxidation of, 289† et seq.

Osmosis, 10†, 22, 24†

Osmotic pressure, 8† et seq. and ionization, 40, 67 definition of, 10 indirect determination of, 16 laws of, 12–20 measurement of, 10 theories of, 32

Oxalates, complex ions of, 241†

Oxidation, 251† et seq., 282† et seq. by electric current, 252† definition of, 251 of organic compounds, 289† production of current by, 253† relation to theory of ionization, 251† et seq.

Oxidation-reduction, reversibility of, 256†, 268† et seq. interpretations of, 251, 282, 286

Oxygen, oxidation by, 277, 278, 280†, 305

Oxygen-hydrogen cell, 280†

Permanganic acid, 287†

Perpetuum mobile, 12

Phases, 118

Phenolphthaleïn, 79

Phosphate group, 302

Phosphomolybdates, 305

Phosphoric acid, 102†, 134

Physical equilibrium, 118† et seq. and chemical equilibrium, 139 et seq. applications of law of, 120 law of, 118

Platinum, 158, 242 et seq.

Potassium hydroxide, 77†−81†, 106

Potassium-ion, 158, 161

Potential differences, 261 et seq. and concentrations, 261, 263† and osmotic pressures, 261 sign of, 261

Precipitates, see also Precipitation solution of, 151† washing of, 148

Precipitation, 122†, 145† et seq. and ionization, 74†, 90, 152†, 220 et seq. fractional, 163, 165† influence of a common ion, 144†, 146, 147 influence of electrolytes, 144†, 150† of electrolytes, 145†

Primary ionization, 101, 102†

Purple of Cassius, 126†, 134†

Reduction, see also Oxidation by electric current, 252† definition of, 252 interpretations of, 251, 282, 286 production of current by, 253†

Salt-effect, 82, 109, 110†

Secondary ionization, 101, 102†, 246

Silver, colloidal, 127†

Silver-ammonium-ion, 217 et seq.

Silver bromide, 224, 303

Silver chloride, colloidal, 138† precipitation of, 150 solubility of, 221

Silver chromate, 141, 165†

Silver group, 157, 199 et seq., 216 et seq.

Silver iodide, 224, 303

Silver-ion, 158 as oxidizing agent, 290† complex ions of, 216†, 225†

Sodium hydroxide, 81, 106, 173

Sodium-ion, 158, 161

Solubility, 121, 123, 146, 147, 153, 155

Solubility-product principle, 141 et seq. applications of, 145†, 147, 149, 151 derivation of, 139 et seq.

Solution, theories of, 8, 32

Solution of electrolytes, 151

Solutions, concentrated, 15, 32, 142 dilute, see Osmotic pressure non-aqueous, 62, 73†, 84 supersaturated, 121†

Solution-tension, electrolytic, 258 et seq. constants, 259, 266, 294, 295

Solvents and ionization, 61, 64 and solubility of electrolytes, 154, 155

Strength of acids, 104

Strength of bases, 78†, 106

Strontium-ion, 158, 162

Sulphate group, 302

Sulphide-ion, complex ions of, 238, 246 concentration of, 202 oxidation of, 251†, 254†

Sulphides, precipitation of, 199†, 203† et seq. solubilities of, 203 et seq., 212

Sulpho-acids, 244 et seq.

Sulpho-bases, 244† et seq.

Sulpho-salts, 243 et seq.

Sulphuric acid, ionization of, 103†

Supersaturation, 121†

Systematic analysis, of metal ions, 157 et seq. of acid ions, 299 et seq.

Tartaric acid, complex ions of, 238†

Tin, ions of, 158, 174, 242 et seq.

Unsaturated compounds, 64

Uranyl salts, 286

Valence, 59 and precipitating power of ions, 135

Van 't Hoff's hypothesis, see Avogadro

Van 't Hoff's theory of solution, 12 et seq. apparent exceptions to, 18

Vapor tension, 17, 36, 38

Velocity of action, 92

Water, see also Hydrolysis composition of, 175 dielectric constant of, 63 formation by electrolytic oxidation, 280, 282† ionization by, 37, 41, 47†, 61, 73†, 74† ionization of, 53, 104, 106, 176 et seq. oxonium ions of, 238 secondary ionization of, 246, 278

Zinc, 257†, 266†

Zinc group, 158, 188 et seq., 210

Zinc-ion, 266

Zinc sulphide, 204† et seq.

Illustration from The Elements of Qualitative Chemical Analysis, vol. 1, parts 1 and 2. With Special Consideration of the Application of the Laws of Equilibrium and of the Modern Theories of Solution.

TRANSCRIBER'S NOTE.

Original printed spelling and grammar is generally retained. Footnotes were renumbered and relocated to the ends of chapters. Notes to tables were left in their original locations. Some mathematical and chemical formulas and equations were modified in format or rearranged. Original small caps type Looks like This. The transcriber created the cover image, and hereby releases it to the public domain.

This book uses many uncommon Unicode characters, and careful selection of the ebook reader software and font used to view it is necessary. Some of the uncommon characters not already mentioned are: U+2296 ⊖, U+2295 ⊕, U+221E ∞, U+221B ∛, U+2212 −, U+21C4 ⇄, U+2192 →, U+21C5 ⇅, U+2572 ╲, and U+2571 ╱, etc. A monospaced font will improve the appearance of the data tables. However, the Thin Space U+2009 is used in most of the chemical and mathematical equations, and an exact monospaced font will not display Thin Space correctly. Adobe's "Source Code Pro" is an unusual "monospace font" that does display Thin Space and the data tables correctly.

The archaic form of scientific notation exemplified by "0.0413", is herein simplified either to decimal form—"0.000013"in this example—or to modern scientific E notation, "1.3E−5". In this, "E" means "times ten raised to the power of". Furthermore, E notation has also been substituted herein for many numbers originally printed like this: "a × 10b ".

The name "van't Hoff" was changed to "van 't Hoff" throughout; likewise "Van't" to "Van 't". The hyphen is used inconsistently throughout the book, in words such as "hydrogen-ion" versus "hydrogen ion" or "non-ionized" versus "nonionizied". These have been retained. The word "difficulty" was sometimes employed as an adverb; herein it is converted to "difficultly" in this usage.

Page 45: Changed "permangante" to "permanganate".

Page 81: Removed the unmatched right parenthesis from "the difference in ionization between potassium hydroxide and ammonium hydroxide).".

Page 104: The table notes were reordered and renumbered to match the sequence of note anchors in the table. The anchor in the table title originally linked to a footnote instead of a table note; this footnote was converted to a table note (the first one).

Page 106: The label for the sixth note to the table "The Ionization Constants of Bases" was changed from "3" to "F".

Page 117: The chemical reaction schema, originally comprising two balanced equations and two unbalanced equations using vertical arrows has been rearranged into four balanced equations, with horizontal arrows. Such rearrangements have been silently performed elsewhere.

Page 117: The printed symbol that might be described as "normal leftward arrow over rightward dark arrow (or heavy arrow)" has been represented herein with a more readily available character "⥂"—the Unicode character with hexadecimal number 2942, designated as "U+2942", rightward arrow over short leftward arrow. The same character is used herein for the printed symbol which might be described as "downward dark arrow left beside upward short arrow right"—the equations having been rearranged into a horizontal format—and also for "rightward dark arrow over leftward arrow". A different character U+2943 "⥃" represents "normal rightward arrow over heavy leftward arrow". Rtn to Footnote #459.

Page 125: In the reaction of arsenious oxide with hydrogen sulphide, changed "H3S" to "H2S".

Page 157 "Mendelejeff" changed to "Mendeléeff".

Page 197: Changed "[AlO3−] = y" to "[AlO33−] = y".

Page 226, etc.: Both forms "Bodlaender" and "Bodländer" are retained.

Page 246: Changed "saponifying esters (p. 801)" to "saponifying esters (p. 81)".

Page 252: Substituted "ε−" for a symbol that might be described as "circled epsilon".

Page 283: In the equation showing the oxidation of zinc by cupric ion, the upward arrow originally shown beside the symbol for copper metal is changed to downward arrow.

Page 310: The reference for "mobility" of "Hydroxide-ion" was changed from "156" to "56".

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