1041 
V5} NOP je 20° | A100° i1009 Ao? | #0 A100" £100° 
| 
Sodium chloride Potassium chloride. 
1 | 48.41 | 1.7191 | 219.3 | 1.6094 63.83 | 1.7773 | 267.1 | 1.6704 
2 | 51.53 1.7656 | 242.4 | 1.6736 66.41 1.8089 | 286.9 “1.7201 
4 | 54.28 | 1.8063 | 260.7 | 1.7244 68.69 1.8366 306.4 1.7686 
10 | 57.72 | 1.8576 | 283.1 | 1.7868 71.50 | 1.8709 | 329.2 1.8262 
20 | 60.04 | 1.8921 | 298.8 | 1.8305 73.52 | 1.8954 | 343.8 1.8628 
40 | 61.81 | 1.9183 315.2 1.8760 75.44 1.9187 | 361.3 | 1.9067 
100 | 63.47 | 1.9430 | 331.5 | 1.9210 11.46 | 1.9432 | 374.1 _ 1.9389 
400 | 65.32 | 1.9703 346,3 | 1.9625 79.63 1.9699 | 385.9 1.9685 
1000 | 65.82 | 1.9777 | 351.8 | 1.9777 80.61 1.9817 | 391.0 "1.9813 
2000 | 66.04 1.9811 355.0 1.9865 . 81.00 | 1.9865 | 392.7 | 1.9856 
oo | 67.32 | 2 359.8 2 82.11 | 2 398.5 | 2 
Magnesium chloride. Calcium chloride. 
ei a eas aid Ae Nh 
1 | 68.02) 2.0552 | 306.2 | 1.8860 76.33) 2.1128 | 326.2 | 1.9356 
2) 77.03) 2.1950 | 373.8 | 2.0816 85.02) 2.2392 | 394.3 | 2.1308 
4 85.71 2.326 430.3 | 2.2452 93.10 2.3570 445.7 | 2.2786 
10 | 96.50 2.4970 491.9 | 2.4234 103.2 | 2.5042 506.1 2.4518 
20 | 104.4 | 2.6196 534.4 2.5462 110.5 | 2.6108 | 546.2 | 2.5668 
40 | 110.6 | 2.7156 | 567.2 2.6416 116.8 | 2.7030 | 587.8 | 2.6838 
100 117.0 2.8152 | 611.8 | 2.7702 123.8 | 2.8048 | 621.9 | 2.7838 
400 | 123.3 | 2.9126 | 657.1 2.9016 131.3 2.9144 ‚664,5 "2.9060 
1000 | 125.9 | 2.9532 | 675.0 2.9532 134.2 © 2.9562. 682.1 2.9566 
2000 | 127.1 | 2.9716 | 680.5 | 2.9690 135.0 2.9680 | 686.2 | 2.9680 
o | 128.9| 3 691.1 | 3 137.2 | 3 | 697.4 | 3 
| | 
For the calculation of the number of gram-mols per 1000 grams 
1000 ¢ 
1000d-cM 
the directly-titrated concentration, d the sp. gr. of the solution and 
M the molecular weight of the salt. 
of water the formula c’ = was used, in which c represents 
69 
Proceedings Royal Acad. Amsterdam. Vol. XVII. 
