SPECIFIC GRAVITY AND DISPLACEMENT OF SOME SALINE SOLUTIONS. 149 



Table of Results of Experiments made on Solutions of Sodium Chloride varying 

 in Concentration from, 1 gram-molecule to 1/512 gram-molecule per 1000 grams 

 of Water by the Hydrometric Method. 



SODIUM CHLORIDE. NaCl = 58-5. 

 T=19-5°C. 



m. 



1-000 



1/2 

 1/4 

 1/8 



7/64 = 

 6/64 = 

 5/64 = 

 1/16 

 7/128 = 

 6/128 = 

 5/128= 

 1/32 

 3/128 = 

 1/64 

 1/128 

 1/256 

 1/512 



L 



9-1 4 y 



1 



1 



1 2-8(n!- 



1 



2 1-^3:!l 



1 ' 



2 oOWU 



4 2-6 B? 



W. 



1058-500 

 1029-250 

 1014-625 

 1007-312 

 1006-398 

 1005-484 

 1004-570 

 1003-656 

 1003-199 

 1002-742 

 1002-285 

 1001-828 

 1001-371 

 1000-914 

 1000-457 

 1000-228 

 1000-114 



S. 



log A. 



■039683 



■020283 



-010300 



■005166 



■004579 



-003920 



■003265 



-002636 



-002294 



-001947 



-0016153 



-001295|3 



-001007;3 



•000652 3 



-000325 3 



-000131 3 



-000058 3 



■0077899 



■0038002 



■0018552 



■0009262 



■0007857 



•0006761 



■0005645 



-0004411 



-00039191 



•0003444 



•00029041 



•0002312 



■0001574' 



■0001137 



0000573 ' 



■0000421 



00002431 



d log A 

 dm 



A. 



dA. 



0-0079794 

 0-0077800 

 0-0074320 

 0-0089920 

 0-0070144 

 0-0071424 

 0-0078976 

 0-0062976 

 0-0060800 

 0-0069120 

 0-0075776 

 0-0094464 

 0-0055936 

 0-0072192 

 0-0038912 

 0-0091136 



1018-099 

 1008-789 

 1004-281 

 1002-135 

 1001-811 

 1001-558 

 1001-301 

 1001-017 

 1000-903 

 1000-793 

 1000-669 

 1000-530 

 1000-364 

 1000-262 

 1000-132 

 1000-097 

 1000-056 



9-310 

 4-508 

 2-146 

 0-324 

 0-253 

 0-257 

 0-284 

 0-114 

 0-110 

 0-124 

 0-139 

 0-166 

 0-102 

 0-130 

 0-035 

 0-041 



dA 

 dm 



18-620 

 18-032 

 17-168 

 20-736 

 16-192 

 16-448 

 18-176 

 14-592 

 14-080 

 15-872 

 17-792 

 21-248 

 13-056 

 16-640 

 8-960 

 20-992 



V 



log Aj - 3 _ 1 



m 

 18-099 



log Am - 3 X 



1-000 



17-578 



2-049 



17-124 



4-199 



17-080 



8-410 



16-558 



9-914 



16-619 



11-522 



16-653 



13-800 



16-272 



17-660 



16-512 



19-877 



16-917 



22-618 



17126 



26 824 



16-960 



33-693 



15-531 



49491 



16-768 



68-512 



16-897 



135-949 



24-832 



185-033 



28-672 



320-531 



m X 



0-000 



- 0-049 

 -0-199 

 -0-410 

 -0-771 

 -0-856 

 -1-000 

 -1-660 

 -1-591 

 -1-285 



- 1-224 

 -1-693 

 -6 825 

 -4-512 

 -7-949 



+ 70-967 

 + 191-469 



§ 68. Preiparation of Solutions. — Instead of diluting a stronger solution in order 

 to obtain the solution of requisite concentration in these arithmetic series, the method 

 was adopted of adding a quantity of solid sodium chloride to a weighed quantity of a 

 solution whose concentration was included in the series so as to produce the next 

 solution of higher concentration in the series. 



The following schedule was drawn up from calculations made as to quantities of 

 solution and salt required in the preparation of an arithmetic series of solutions from 

 1/128 to 8/128 gram -molecule of sodium chloride in 1000 grams of water, each 

 solution being prepared from the more dilute one immediately preceding it. 



a. 



h. 



c. 



d. 



e. 



/• 



n. 



III. 



Quantity of Water in 



Solution whose 



Concentration is m 



grain-molecules 



per 1000 grams Water. 



Qnaiitit}' of Salt in the 



Solution whose 



Concentration is m 



gram-molecules per 



1000 grams of Water. 



Quantity ofn-l 



Solution required, 



whose Concentration 



is m - 1 . 



Extra Quantity of Salt 



to be added to 



Quantity of Solution 



given in Column e. 



1 



1/128 



750 grams 



0-3427 grams 







2 



2/128 



730 ., 



0-6673 „ 



730-3335 grams 



0-3338 gram 



3 



3/128 



710 „ 



0-9735 „ 



710-6490 „ 



0-3245 „ 



4 



4/128 



690 „ 



1-2614 „ 



690-9461 „ 



0-3153 „ 



5 



5/1 -J 8 



670 „ 



1-5310 „ 



671-2248 „ 



0-3062 „ 



6 



6/128 



650 „ 



1-7824 „ 



651-4852 „ 



0-2972 „ 



7 



7/128 



630 „ 



2-0155 „ 



631-7275 „ 



0-2880 „ 



8 



8/128 



610 „ 



2-2303 „ 



611-9515 „ 



0-2788 „ 



Note. — The weights entered in this Table are the true weights, in vacuo, required for the production of the required solutions. 

 The actual weights placed on the pan of the balance were those weights adjusted for the meteorological conditions at the 

 time of experiment. 



