54 



§ 12. Let us now put p=:l, q^\. The physical meaning of 

 this is that there is no question of adsorption, because the surface 

 tensions of all the glycerides in contact with the saponifying sur- 

 roundings are the same. The velocity of saponification of an ester 

 group is now independent of whether or no a neighbouring gioup 

 is saponified. 



For this case we find from (22) and (23) : 



(1 



-ktV 



(32) 



T = 1 — e-^> (33) 



from which : 



9=T' (34) 



This curve is indicated by C in fig. 2. It touches the boundary 

 lines B at ^ =: 7'= and at y z= T z=l. 



Equation (34) is valid for the saponification in solution. From 

 Geitel's') and J. Meyer's^) measurements follows that it holds for 

 the saponification of triacetine, at least with close approximation. If 

 it is possible to measure the split off quantity of glycerine in this 



') loc. cit. 



