VOLUME CHANGES IN THE PROCESS OF SOLUTION. \)6 



If the values of v a be plotted against the composition of 

 the solvent, a maximum value is found for a solution con- 

 taining 32 per cent, alcohol (Fig. 2). The maximum value 

 of A v corresponds to about 44 per cent, alcohol. A similar 

 series of results was obtained for solutions of carbamide 

 at 30° C. 



Table XXI. 



Solute — Carbamide. Temp. 30° C. 



(a) In water (d = -995677). 



A d x v s 



2-3290 1-001575 -744 



9-0567 1-017457 -745 



15-4282 1-030922 -747 



(b) In ethyl alcohol (d = -780777). 



2-3698 - -789391 -677 



4-3264 -796280 -679 



(c) In water-alcohol (25-44 per cent, alcohol). 



d = -955387 A v = -0260 cc. 



4-0276 -965613 -760 



11-5191 -983142 -761 



(d) In water-alcohol (30*47 per cent, alcohol). 



d = -946572 A v =-. -0295 cc. 



4-3638 -957766 -761 

 9-3135 -969667 -761 



(e) In water-alcohol (36*62 per cent, alcohol). 



d = -934695 A v = -0323 cc. 



3-2901 -943409 *760 



6-4193 -951311 -760 



13-0705 -966975 -761 



(/) In water alcohol (47*11 percent, alcohol). 



d = -912305 A v = -0339 cc. 



4-5592 -924928 -752 



7-7650 -933190 -756 



(g) In water-alcohol (58-89 per cent, alcohol). 

 d = -885436 A v = -0323 cc. 



5-2383 -900608 -747 



13-2060 -921661 -749 



