40 IONIZATION COEFFICIENTS OF CERTAIN 
TABLE II. 
Ionization Coefficients. 
at 18°C oat 
i K5S0.. |4NaqSOx. | Atis’c: | Atorc. | At 18°C ara 
050 | 604.2 | 486.0 | .757 | .755 | .733 | .762 
055 soso || 480.0 | 750 | .748 | .728" ewes 
060 504.1 75.5 | 745 | "748 |. .723 )\ seu 
070 535.4 .| 466.5 | .736 | .732 | .715 | 792 
.080 877.5 | 460.0 | .723 | .722 | .703 | .712 
.100 564.0 448.5 | .706 705 | .686 | .694 
125 547.5 ABUG il Sree ee ey eee 672 
150 535.0 | OEE eee Bena eee 654 
200 516.0 | 403.1 | .650 | .645 | .601 | .624 
250 503.0 387.4 | .634 | .629 | .586 | .600 | 
300 493.0 373.5 | .620 | .616 | .570 | .578 
350 485.0 362.4 | .605 | .606 | .556 | .561 
400 478.0 353.0 | 595 | .598 | .545 | .546 
450 473.0 | - 345.5 | 587 | 501 | .538 | 535 
500 470.0 | 339.6 | 580 | 588) .522 | 525 
600 466.0 | 330.0 | 567 | .583 | .606 | .511 
700 464.0 $24.2 | 551 | .s80 | .498 | 501 
It appears from these results that in the case of solutions of 
potassium sulphate the ionization coefficient increases very 
slightly with rise of temperature between 0° and 18°C from a 
concentration of 0.05 to one of about 0.35, and that from this 
ntration to one of at least 0.7 it decreases, the magnitude of 
the decrement increasing rapidly with the concentration, and 
amounting at a concentration of 0.7 to 5 per cent. In the case 
of sodium sulphate, the coefficient diminishes with rise of 
