VOl. XXVI.
[OCTOBER,
No.
1904.1
IO.
THE JOURNAL OF THE
AMERICAN CHEMICAL SOCIETY, ALCOHOMETRIC TABLES, FOR EACH INTEGRAL PERCENTAGE BY WEIGHT, AND FOR EACH DEGREE OF THE HYDROGEN THERl'lOmETER FROM 1 5 O TO 2 2 O . BY EDWARD W. MORLEY. Keceived August 23, 1904.
so convenient in my laborator?; that they are printed for the use of others. They give the true specific gravity for each integral percentage by weight from o per cent. to 100 per cent., for each degree of the centigrade hydrogen thermometer from 15' to 2 2 O , according to the results of MendelCeff. T h e temperature of IS', prescribed in many tables, is suitable to warehouses where alcohol is gauged, but too low for scientific laboratories. The specific gravity here given as the quotient of the weight of the alcohol divided by its volume, ncreased by the corrsction for displaced air: in other words, it is the weight of I cc. of alcohol, the weight being reduced to vacuum.l T H E following tables h a w been found
1 Several methods of determining lhe specific gravity may be used. The following convenient : Determine first for all the volume of a pycnometer a t each degree from to 22' (which require's but one deighing. but this must be corrected for displaced ir and for the cubical expansion of the glass). The specific gravity is then found b di .dirig the weight of the alcohol, corrected for,displaced air, by the capacity of the J a s k the temperature of the alcohol. The following table gives the correction for displaced .r, which is to be added for each gram of water or alcohol. CORRECTION F O R DISPLACED AIR. Correction for I gram. Specific Gram. gravity.
25'
0.80
0.85
+O.oOIOg
+O.oO108
0.90
+o.ooro7
0.95
+O.WI06 +O.OOI06
1.00
I
186
Per cent.
EDWARD W . MORLEP.
d15' 4 O
'
d
16'
4'
dIj' 4'
d184'
Differ. Differ. eiices for I ences per cent. for I O
0
0.99913
0.99898
0.9988 I
0.99863
T
0.99724 0.99542 0.99366 0.99197 0.99034
0.99707 0.99525 0.99343 0.99 I 78 0,99014
0.99690 0.99506 0.99329 0.99'59 0.9s994
0.9967 1 0.99487 0.99309 0.99 138 0.98973
0.98878 0.98 728 0.98583 0.98441 0.98310
0.98557 0.98707 o 98562 0.98423 0.98288
0.9883j 0.98686 0.98541 0.98400 0.98265
0.98816
21
0 .93664
2:
0.98j I 8 0.98376 0.98240
2, 2.
0.98156 C.97901 0.97 7 7 7 0.97654
0.98 I3 I 0.g8000 0.97872 0.97 747 0.97622
0.98105 0,97972 o.gi84; 0.97716 O.gj588
0.97565 0.97446 0.97326 0.97204 0.97082
0.97532 0.97410 0.97 289 0.97166 0.97042
0.97493 0.97375 0.9j251 0.97 I 27 0.9 700 I
0.97463 0.97338 0.972 I 2 0.97085 0.969 j 8
3 3 3 4 4
0.96957 0.96830 0.96700 0.96 j 6 j 0.96431
0.96914 0.9678 j 0.96654 0.96519 0.96380
0.96871 0.96740 0.96608 0.9647 1 0.96330
0.9682 7 0.96695 0.96559 0.9642 I 0.96279
4
0.9629 I 0.96 147 0.95997 0.95845 0.9j688
0.96239 0.96093 0.95942 0 . g j787 0.95629
0.96186 0.96038 0.95886 0.95 7 29 o.gjj69
0.96 I33 0,95983 0.95828 0.9567 1 0.95509
1
2
3 4 5 6
7 8 9 IO
I1 I2
I3 I4 1.5
I6 I7
I8 I9 20
21 22
23 24 25
26 27
28 29 30
0.98180 0.98053 0.97929 0.97806 0.97685
0. 98027
1;
IS IC 2c 2c 21
2;
21
2 2
3 3
4
c A c
1 1
f
I 187
ALCOHOMETRIC TABLES. Per cent.
d
190 -
4'
.
d209 4'
'
d1x0 4 O
.
d220 4.
Differ- Differences for I ences per cent. for IO.
0
0,99844
0.99824
0.99802
0.99780
21
I
0.9965 1 0.99466 0.99288 0.99116 0.98951
0.99630 0.99445 0.99265 0*99093 0.98927
0.99608 0.99422 0.99242 0.99070 0.98903
0.99585 0.99399 0.992 18 0.9904 5 0.98878
22
23 23 24
0.98793 0.98640 0.98493 0.98351 0.9821j
0.98768 0.9861 j 0.98468 0.98326 0.98 189
0.98743 0.98 590 0.98442 0.98300 0.98162
0.98718 0.98564 0.984 ' 5 0.98271 0.98133
25 25 26 26 27
0.98078 0,97944 0.97813 0.97683 0.97554
0.98049 0.97913 0.97781 0.97649 0.975 I9
0.98021 0.97883 0.97749 0.97616 0.97485
0.97 99 1 0.97852 0.97716 0.9758' 0.97448
28 30 32 34
35
0.97427 0.97301 0.9 7 I 73 0.97046 0.969 I 6
0.97390 0.97262 0.97134 0.97003 0,96872
0.97354 0.97224 0.97094 0.96962 0.96829
0.97316 0.97 185 0.97052 0.96919 0.96784
37 38 40 42 44
0.96784 0.96649 0.96512 0.96371 0.96228
0.96738 0.96601 0.96462 0.96320 0.96 I75
0.96693 0.96555 0.96414 0.96270 0.961 23
0.96645 0.96506 0.96364 0.962 18 0.96068
46 47 49
0.96080 0.95928 0.95772 0.95612 0.95448
0.96025 0.95872 0.95713 0.95552 0.95387
0.95972 0.95816 0.95656 0.95493 0.95326
0.95916 0.95759 0.95596 0.95432 0.95 263
54 56 58 60 62
2
3 4
5 6
7 8 9
to I1
I2
73
I4 '5 16
'7 18 I9 20
21 22
23 24 25 26 27 28
29 30
22
5' 53
1188 Per cent.
EDWARD W. MORLEP.
d 15" Ll*
d
16"
-17'
4-
4*
'
30
o.gj688
0.95629
0,95569
164
60
31
0.95527 0.95361 0,95191 o.gjo18 0.94S40
0.95466 0,95299 0.95127 0.94952 0.94772
0.95405 0.95236 0.95060 0.948sh
168
61
Ij 2
0.94 j0.i
I s4
63 64 66 67
0.94658 0.94472 0.94282 0.94089 0.93893
0.94539 0.94401 0.942 I I 0.0~016 0.93818
0.94522 0.94332
Isg
0.94I 40
I95 '98
42 43 44 45
0.93694 0.939I 0.93284 0.93078 0.92X68
0.9361h 0.934'5 0.93209 0.9300 I 0.92 790
46 47
0.926jj 0.92440
0.925T T 0.92362
0.9206s o.g1Sq!,
32 I
0.91627
2-1 I
L0
223
80 80 81 81
32
33 34 35 36 37 38 39
40 41
204
0.93.340 0 . 9 3 I34 0.9 2 'j7 0.92711
20j
74 75 75 ;E.
0.92501
215
--
0.9228j
217
7:
219
59 79
0.92 J
49 50
51 52
0.91.565 0 91343 0.91 119 0.90895 0.90669
O.gI4Sj 0.91263 0.9 103s 0.90814 0.9058S
0.9I 405 0.911 3 2 0.90957 0.90733 0.90506
0.90442 0.9021j 0 89987 0.897jj
0.90360 0.90133 0.39904 0.89674 0.89444
0.90279 0.900 52 0.59822
O.Sqj27
65 70 71
0 . 9 3 5 44
0.91927 0.91706
56 57 58 59 60
I92
74
0.92224
54 55
so
201
0.92006 0.91786
53
I
0.93944 0.93745
4s
4
