LIQUIDS AND ALLIED EXPERIMENTS. 



77 



Table 34. — Air-air through BaCl 2 solution (20.5 grams in 100 grams water). Single- 

 tube vessel. ^=7.4960 grams; £=26.926; p ff = 2.47o; p w = 1.170 at 23 ; float, 

 2r = 3.oocm.; vessel, 2r = 4-7 cm. 



Date. 



Nov. 8 



9 

 1 1 



12 



>3 

 •4 



'5 



Barom- 









eter. 



t n 



»o 



75.07 





 24.0 



70.19 



2.864 



75 



55 



19.0 



68.90 



2.854 



76 



33 



19.0 



68.11 



2.821 



75 



85 



19.0 



67.87 



2.811 



76 



'7 



19.0 



67.64 



2.802 



75 



69 



19.0 



67.57 



2.799 



75 



72 



19.0 



67.27 



2.787 



1 



Date. 



Nov. 16. 

 18. 

 19. 

 20. 



21 . 



22 . 



23- 



Barom- 

 eter. 



76.52 

 76.26 

 76.29 



75-97 

 76.31 



75-94 

 76.08 



H 



67.21 

 66.59 

 66.31 

 66.09 

 65.86 

 65.80 

 65.69 



Vo 



2.7S7 



2.767 

 2.758 

 2.751 

 2-743 

 2.739 

 2-734 



A 



2-8' 



Jlfcv.8 









t 



55? 







I'j # 



c#w.25 



30iAr.5 



Fig. 30 A, B. — Chart showing loss of standard volumes of gas in diver in lapse of days. 

 Diffusion of air through Bad- solution. 



54. The Same, Continued. — The solution was now diluted one-half and 

 tested in the same vessel. The density was p w = 1.0886 at 21 , implying 

 about 9.6 grams in 100 grams of solution or 10.6 grams in 100 grams of 

 water. This corresponds to the vapor pressure ir' = w(i —0.050). Table 35 

 and fig. 30 b record the results obtained, which are fairly regular, except at 

 the beginning, where the conditions of equilibrium are being slowly 

 approached. The mean constants are 



v = 0.0082 c.c./day or 10 w k = 0.225 



a slight increase on the preceding values, showing that the effect of dilution 

 as usual is at first not marked. 



Table 35. — Air-air through BaCl 2 solution (10.6 grams in 100 grams water), 

 tube vessel. Constants as in table 34. p w = 1.0886 at 21 . 



Single 



Date. 



Barom- 

 eter. 



t 



H 



Vo 



Date. 



Barom- 

 eter. 



t 



H 



t'o 



Nov. 25 . . 



74.91 





 17-3 



67. 1 1 



3- '94 



Dec. 9 



. 76.28 





 17.8 



64.51 



3.066 



26. . 



76.20 



17-3 



66.80 



3 



179 



10 



• 76.33 



'7 



8 



64.27 



3-054 



27. . 



76.38 



17. 1 



66.49 



3 



166 



1 1 



• 75-92 



'7 



5 



64. 12 



3.049 



29. . 



76.95 



16.6 



65.81 



3 



138 



12 



76. 16 



'7 



6 



6393 



3.039 



30. . 



76.79 



16.6 



65.16 



3 



107 



13 



• 77->o 



17 



3 



63-57 



3.025 



Dec. 2. . 



76.60 



16.5 



64.51 



3 



077 



14 



• 76.74 



17 



1 



63.27 



3.013 



3- • 



76.45 



16.5 



64-53 



3 



078 



16 



• 75 40 



'7 



1 



62.93 



2.996 



4- - 



76.30 



16.7 



64.44 



3 



073 



17 



• 76-45 



'7 



2 



62.77 



2.988 



5- • 



77.06 



17.0 



64.50 



3 



072 



18 



. 76.40 



17 



3 



62.51 



2-975 



6.. 



75-75 



17-4 



64.60 



3 



073 



19 



■ 74-34 



17 



4 



62.36 



2.967 



7-- 



76.14 



.7-8 



64.62 



3 



071 



20 



- 75-88 



17 



4 



62.22 



2.960 



