IV 



CONTENTS. 



Part I Continued. 



PAGE. 



Uranyl Sulphate 64 



Uranyl Acetate 65 



Hydrochloric Acid 65 



Nitric Acid 66 



Sulphuric Acid 66 



Discussion of the Results 67 



The Conductivity Measurements 67 



A Dehydrolytic Time Factor 69 



Molecular Conductivities 70 



PAGE. 



Dissociation of the Various Salts 73 



Temperature Coefficients of Conduc- 

 tivity and the Solvate Theorjr of 



Solution 76 



Substances with Slight Hydrating Power 77 



Substances with Large Hydrating Power 77 



Hydration and Ionic Volume 80 



Temperature Coefficients of Conduc- 

 tivity in Per Cent 81 



Part II. 



Organic Acids 87 



Cell Constants 87 



Dissociation of Organic Acids 87 



Values of fi x for the Sodium Salts of the 



Organic Acids 89 



Values of /u^ for the Organic Acids. ... 91 



Acetic Acid 93 



Dichloracetic Acid 93 



Trichloracetic Acid 94 



Cyanacetic Acid 94 



Phenylacetic Acid 95 



Propionic Acid 95 



a-Brompropionic Acid 96 



/3-Iodopropionic Acid 96 



/S-Acetylpropionic (Levulinic) Acid 97 



n-Butyric Acid 97 



a-Brombutyric Acid 98 



Isobutyric Acid 98 



Hydroxyisobutyric Acid 99 



Isovaleric Acid 99 



Caprylic Acid 100 



Malonic Acid 100 



Dimethylmalonic Acid 101 



Ethylmalonic Acid 101 



Diethylmalonic Acid 102 



Methylethylmalonic Acid 102 



Isopropylmalonic Acid 103 



Dipropylmalonic Acid 103 



Butylmalonic Acid 104 



Benzylmalonic Acid 104 



Allylmalonic Acid 105 



Succinic Acid 105 



Monobromsuccinic Acid 106 



Dibromsuccinic Acid 106 



Pyrotartaric Acid 107 



/-Tartaric Acid 107 



Racemic Acid 108 



Thiodiglvcolic Acid 108 



Tricarballylic Acid 109 



Cyanuric Acid 109 



Diphenylglycolic (Benzilic) Acid 110 



Hippuric Acid 110 



Uric Acid Ill 



Citric Acid Ill 



Pyromucic Acid 112 



Crotonic Acid 112 



Maleic Acid 113 



Fumaric Acid 113 



Itaconic Acid 114 



Citraconic Acid 114 



Mesaconic Acid 115 



Phenylpropiolic Acid 115 



Meconic Acid 116 



Benzoic Acid 116 



o-Chlorbenzoic Acid 117 



o-Nitrobenzoic Acid 117 



m-Nitrobenzoic Acid 118 



p-Nitrobenzoic Acid 118 



1, 2, 4-Dinitrobenzoic Acid 119 



1, 3, 5-Dinitrobenzoic Acid 119 



Picric Acid 120 



Salicylic Acid 120 



Acetylsalicylic Acid 121 



Sulphosalicylic Acid 121 



m-Hydroxybenzoic Acid 122 



p-Hydroxybenzoic Acid 122 



1, 2, 4-Dihydroxybenzoic Acid 123 



1, 2, 5-Dihydroxybenzoic Acid 123 



Gallic Acid 124 



o-Aminobenzoic Acid 124 



??z-Aminobenzoic Acid 125 



p-Aminobenzoic Acid 125 



Metanilic Acid 126 



Sulphanilic Acid 126 



Picramic Acid 127 



p-Sulphaminobenzoic Acid 127 



Benzenesulphonic Acid 128 



wi-NitrobenzenesuIphonic Acid 128 



p-Toluenesulphonic Acid 129 



1, 2, 4-Nitrotoluenesulphonic Acid 129 



1, 4, 2-Nitrotoluenesulphonic Acid 130 



o-Toluic Acid 130 



w-Toluic Acid 131 



;;-Toluic Acid 131 



Cinnamic Acid 132 



Hydrocinnamic Acid 132 



o-Phthalic Acid 133 



4, 5-Dichlorphthalic Acid 133 



Tetrachlorphthalic Acid 134 



Anisic Acid 134 



Vanillic Acid 135 



Naphthionic Acid 135 



Mandelic Acid 136 



Camphoric Acid 136 



Coumaric Acid 137 



Discussion of the Results with the Or- 

 ganic Acids 137 



Dissociation of Organic Acids 139 



The Dissociation Constants 140 



Temperature Coefficients in Conductiv- 

 ity Units 141 



Temperature Coefficients in Per Cent . . 143 



