( 30 ) 

 The first condition lomls 



UHE^-ir E, ^- AUzr^iv IJ E, — E, ^ . ) V . (1) 



("l ds J \ c'l dz J 



the second 



D dcn ( A dc,\ 



---" . Uc,= {UHE, + E, T-j^^'i • • (2) 



C2 dc \ Ci dz / 



Taking' into account that tlic difference of concentration will be 

 very small, and that we supposed the reaction-velocities to be infi- 

 nitely great, we shall put cy = k c^ , k being a constant. 



(2) may now be written 



B dci / A dc,\ 



^ — (UHE,, + E, ^]L 



Ci dz \ Ci dz J 



SO 



1 dci_{UBE^-{- E,)k 



c^ dz ~ B -\- Ak 



Ak 

 Substituting this in (1) and wiiting a for r, . r , we obtain 



(ÜBE^^^E,) (1 —a) U=. \{VHE^ — E,) — a{UHE^-\-Ez)\V. 

 E,\U+ V—a{U~ V)}^ — E,I1[ U-^ - V'-a{U'-— U V}\ 



E. f;(i -«)+ V 



H(U- V] '^ 



E, ' f/(i_„)_j-F(l+a) 



and 



1 dc, I U (I — a) 4- V ) a 



The limiting cases are /c = and /; = co . 

 First case (very slightly dissociated) a ■= 0. 



E~ dcc 



^ = -H{U- V) -^ = (3) 



Ex dz 



Second case (completely dissociated) a ^ 1. 



5=_£(t,-,o l*i = ^.H.£±Z. . . (4, 



