alcohometric tables, for each integral percentage by weight, and for

the weight of 1 cc. of alcohol, the weight being reduced to vacuum.1. 1 Several methods of determining the specific gravity may be used. The following...
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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