CONTENTS 



CHAPTER I 



Introduction i 



Definitions of physical properties of aqueous solutions. . . 12 



CHAPTER II 



Electrolytic Dissociation 17 



CHAPTER III 



Osmotic Pressure 29 



CHAPTER IV 



Hydrogen and Hydroxyl Ion Concentration and C0 2 Pres- 

 sure 36 



Determination of hydrogen ion concentration with hydro- 

 gen electrodes 38 



Determination of hydrogen ion concentration by means 

 of indicators 49 



Buffers and solutions of standard hydrogen ion concen- 

 tration 51 



Dissociation constants of acids and bases 54 



Dissociation of amphoteric electrolytes (ampholytes).... 57 



CHAPTER V 



Surface Tension and Adsorption 58 



Surface tension of aqueous solutions . . .- 62 



Adsorption 65 



CHAPTER VI 



Electrolytes, Non- Electrolytes and Colloids 68 



Non-electrolytes 69 



Colloids 70 



Suspensoids 70 



Emulsoids 73 



CHAPTER VII 



Enzyme Action 80 



CHAPTER VIII 



Permeability of Cells 88 



CHAPTER IX 



Changes in Permeability of Plant Cells 100 



vii 



