no 



MOLECULAR STRUCTURE 



The numbers show that below 32-65 the solution satur- 

 ated for anhydride is supersaturated with respect to 

 NaSO 4 . 10 H 2 O ; here we are clearly dealing with the 

 well-known supersaturated Glauber salt solution. Above 

 32-65 the state of affairs is reversed, and the solution 

 saturated for the hydrate is the more concentrated. The 

 two facts accord with the reversible transition in one or 

 the other direction. 



The tartrate mixture and racemate show precisely similar 

 behaviour. For 100 molecules of H 2 O there were found, 

 expressed in molecules of C 4 H 4 6 NaNH 4 : 



For Saturation with 

 Tartrate mixture 

 Racemate . . . 



16.7 

 2-43 



27 

 3-86 

 3-86 



Only the solubility curve could not be followed out higher, 



because a second transition into sodium and ammonium 

 racemates takes place. For this reason rubidium racemate is 

 better suited to show the point, having a corresponding tran- 

 sition at 40. Measurements of solubility gave, expressed 

 in molecules of C 4 H 4 O 6 Eb 2 for 100 molecules of water: 



