CONTENTS. 



CHAPTER I. 



THE ABSORPTION SPECTRA OP AQUEOUS SOLUTIONS OF HYDRATED AND NON- 

 HYDRATED SALTS, AS STUDIED BY MEANS OF THE RADIOMICROMETER. 



Page. 



The Radiomicrometer 9 



Method of Procedure 10 



The Cells 11 



Earlier Results 13 



Effect of Slit-Width 13 



Water Absorption 16 



Effect of Slit-Width on the Absorption of Light by Water 18 



Absorption of Light by Water as Affected by Hydrated and by Non-hydrated Salts . 19 



Method of Procedure 20 



Results 20 



Discussion of the Results 33 



CHAPTER II. 



CONDUCTIVITIES, TEMPERATURE COEFFICIENTS OF CONDUCTIVITY, DISSOCIATIONS, 

 AND CONSTANTS OF CERTAIN ORGANIC ACIDS IN AQUEOUS SOLUTIONS. 



Introduction 47 



Purpose of the Investigation 48 



Experimental 48 



Reagents 49 



Apparatus 49 



Procedure 51 



Cell Constants 51 



Values 54 



Limiting Conductivities of the Acids 55 



Malic acid 57 



Aconitic acid 57 



ra-Chlorobenzoic acid 57 



p-Chlorobenzoic acid 57 



o-Bromobenzoic acid 57 



rra-Bromobenzoic acid 57 



m-Acetoxybenzoic acid 57 



o-Sulphobenzoic acid 58 



m-Sulphobenzoic acid 58 



p-Aminobenzensulphonic acid 58 



Sebasic acid 58 



Dissociation Constants 59 



Summary 62 



CHAPTER III. 



A PRELIMINARY STUDY OF THE CONDUCTIVITY OF CERTAIN ORGANIC ACIDS IN ETHYL 



ALCOHOL OF 15, 25, AND 35. 



Historical 64 



Experimental 67 



Results 73 



Malonic acid 73 



o-Chlorobenzoic acid 73 



p-Chlorobenzoic acid 74 



p-Bromobenzoic acid 74 



o-Nitrobenzoic acid 74 



p-Nitrobenzoic acid 74 



1, 2, 4, Dinitrobenzoic acid 75 



1, 2, 4, Dihydroxybenzoic acid 75 



Tetrachlorphthalic acid 75 



Malonic, and Change in Concentration 75 



o-Chlorobenzoic and Change in Concentration 76 



p-Chlorobenzoic and Change in Concentration 76 



p-Bromobenzoic and Change in Concentration 76 



