28 
PROFESSOR GRAHAM ON THE DIFFUSION OF LIQUIDS. 
We have the same close correspondence in the diffusion products of these two salts 
as in the preceding group, and here the correspondence extends to the 10 per cent, 
solution. 
Diffusion at 64°* 1. 
2. 
4. 
6 f. 
10. 
Chromate of potash 
5*77 
5-85 
11*19 
10-70 
17*60 
16-48 
24-75 
24-85 
Aeetate of potash 
The 10 per cent, solution of these two salts also agrees with the same solution of 
carbonate of potash, which was 24*69 grs. Nor do the lower proportions diverge 
greatly from the preceding group of salts. 
(3). Another pair of salts were simultaneously diffused, but with an accidental dif- 
ference of 0°*4 of temperature. 
Table IX. — Diffusion of Bicarbonate of Potash, KO . COg+HO . CO 2 , at 64°*1, 
and Bichromate of Potash, KO . 2 Cr 03 , at 64°*5. 
Parts of anhydrous salt 
to 100 water. 
Density of 
solution 
at 60°. 
At 64°-l and 64°-5. 
Experiments. 
Mean. 
Bicarbonate of potash. 
2 
4 
1-0129 
1-0252 
5-74 
5-77 
5-91 
10- 75 
11- 16 
11-13 
5-81 
11-01 
Bichromate of potash. 
2 
4 
1-0139 
1-0273 
5-64 
5-73 
5-59 
11-55 
11-54 
11-39 
5-65 
11-49 
Here again the two salts approach closely in diffusion, and also correspond well 
with the two preceding series. 
Mean Diffusion at 64°*1 and 64°*5. 
2. 
4. 
Bicarbonate of potash 
Bichromate of potash 
5-81 
5-65 
11-01 
11-49 
It is singular to find that salts differing so much in constitution and atomic weight 
as the chromate and bichromate of potash, may be confounded in diffusibility. The 
diffusion products of these two salts are, for the 2 per cent, solutions, 5*77 and 5*65 
