1898-99.] Sulphuric Acid and Sulphates in Solution. 
519 
Concentration of H 2 S0 4 = c. 
,, ,, Li 2 SO 4 = 0‘l. 
c 
Ki 
h 
a 
“i 
K 
k 
k x 100 
K 
0-025 
545 
282 . 
•693 
•550 
433 
269 
62-2 
0-05 
493 
306 
*630 
•545 
427 
292 
68-4 
0-1 
441 
326 
•560 
•538 
423 
311 
73*6 
0*2 
411 
344 
•539 
•526 
401 
328 
81*9 
0-35 
407 
363 
•522 
*515 
401 
346 
86*3 
h 2 so 4 
Free Acid. Neutral Sulphate. 
Acid Sulphate. 
0*025 
0-01555 
0-09055 
0-00945 
0*05 
0-03421 
0-08421 
0-01579 
O'l 
0-07362 
0-07362 
0-02638 
0*2 
0-1638 
0-0638 
0*0362 
0-35 
0-3020 
0-0520 
0-0480 
0,(1 -cm) 
C 2 (l-o 2 ) C 3 (l-a 8 ) 
d-ai) 
(l-«2> 
(1 - «s) 
0-006997 
0-03350 0-002703 
•450 
•370 
•286 
0*01556 
0*03267 0-004802 
•455 
•388 
•304 
0*03402 
0-03064 0*008756 
•462 
•416 
•332 
0*07763 
0-02947 0-01361 
•474 
*462 
•376 
0-01465 
0-02621 0*02011 
•485 
•504 
•419 
HoSO. 
t Li 2 S0 4 
•A-i 
“weight ” 
0-025 
+ o-i 
0-0556 
•351 
0-05 
3 J 
0-0597 
•262 
o-i 
0-0583 
•186 
0-2 
5 3 
0-0718 
•106 
0-35 
3 3 
0-0712 
•065 
The values of A 1} given in the above table, 
were calculated by 
means of the same expression as that used for sodium sulphate. 
The probable mean value is 0-0600, which does not differ very 
much from that found for the sodium salt. According to this 
result, the equilibrium between the undissociated portions of the 
sulphuric acid, lithium sulphate, and lithium acid sulphate in the 
various solutions is given by the expression 
{ aH 9 S0 4 (l - cq) }°- 85 _ 0-0600 
aLiHS0 4 (l -r'ag) {aLi 2 S0 4 (l -a 2 )}i^* 
