IO2 



INFRA-RED REFLECTION SPECTRA. 



saturated solution indicate that the reflection band is complex, with 

 maxima at 9.15 and 9.5^, the latter being coincident with that of 

 H 2 SO 4 . This is better illustrated in the curve for the dilute solution, 

 in which the band at 9.1 ju, has quite disappeared. 



C 3Z 

 o 



s 



(6 





a 9 10 n 



FIG. 86. Nickel sulphate. 



6 8 10 II IZJUL, 



FIG. 87. Copper sulphate (a) and (c) ; Ziuc sulphate (*). 



