ANTAGONISM 



149 



Proceeding in the same manner with the other mix- 

 tures, we get the values given in Table XI. Starting with 



0.000900i 



A Decrease in KM 

 KN 

 X " Ko 

 V " Ks 



0.000500 



62 

 CA CL S in solution, 



FIG. 64. Shows the increase of a hypothetical salt compound Na4XCa (see Table XI) and the 

 corresponding decrease of the velocity constants K N , K o , K s and K M (these constants are 



given in Table X). The figures on the abscissae give the molecular per cent, of CaCla in the 

 mixture. The mixture containing 62.0% CaCh is taken as the standard of comparison: 

 proceeding from this to the mixtures containing less CaCh we find that Na4XCa increases 

 and the velocity constants decrease as shown by the ordinates. In order to facilitate com- 

 parison the values of K N have been multiplied by 0.989; of K o by 0.991; of K s by 0.383; and 



of K M by 0.251. 



the lowest value (that in 62.0% CaCl 2 ) we observe that 

 there is an increase as the per cent, of CaCl 2 decreases 

 until 2.44% is reached (the amount of this increase is 



