AUXILIARY TABLE FOR COMPUTATIONS IN CHEMICAL THERMODYNAMICS

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP82-00039R000200090003-8
• Release Decision: RIPPUB
• Original Classification: R
• Document Page Count: 9
• Document Creation Date: December 22, 2016
• Document Release Date: April 9, 2012
• Sequence Number: 3
• Publication Date: July 18, 1952
• Content Type: REPORT

Declassified in Part - Sanitized Copy Approved for Release 2012/04/09: CIA-RDP82-00039R000200090003-8
Declassified in Part - Sanitized Copy Approved for Release 2012/04/09 : CIA-RDP82-00039R000200090003-8
r Com utations in Chemical Thermod amics
AU i I Table fo
by
M. I. Temkin and L. A. Shvartsman
' Khimii [Progress of ChemistryJ
Uspekha.
Vol XVII, No 2s 259-262, Russian (article)
p
bi-mo per, Mar/APT 1945
 Declassified in Part-Sanitized Copy Approved for Release 2012/04/09: CIA-RDP82-00039R000200090003 8
taken 273.16, so that 2 degrees Centigrade corresponds to T g96?167.
Further, with the aid of the f oxanu1a
F? = ?RT In K
the value of the equilibrium constant K can be obtained.
This method of calculation is often c.lled the Ulich approx.ma?
Lion method, although essentially this method was used earlier by Lewis
and sandal ( 1 ) .
In many cases, the approximation method suffices, especially if
it leads to very high absolute values of which indicate that the
reaction care either proceed to completion or that it cannot practically
proceed at all,
(b) Exact calculation. If the approximate calculation indicates
that both the starting substances and the reaction products are present
in noticeable amounts at equilibrium, then an exact calculation can
be made, This calculation takes into account the value of .S CP and
The values of C are expressed by interpolation formulas of
p
xil~~r~!~~~~~~ib~(~
the type
the following equation;.
,. : ;
I r ~t 4 P
Declassified in Part - Sanitized Cor v Approved for Release 2012/04/09 : CIA-RDP82-00039R000200090003 8
 Declassified in Part - Sanitized Copy Approved for Release 2012/04/09 : CIA-RDP82-00039R000200090003-8
determined by in th~.s ec~,uatior~
The consent Q Ho U daterm by o
~~urther' the value of b ~' for
es of ~ H 8 and T ~ 298 .16.
the va~,u 29 e uata,an;
attire is determined from the following q
the required temper ~
_Q(
t determined by substituting in this
Also, the constant J is first
cation
Fa298, which ~. s cal. cola ted from the $q
equation the value of ~ -
H298 " 298.16 ' 50298,
hF?295
(8)
Kelly, use is made of the following ex-
aometimes, f al:~owing y~
ssions for the heat capacities
pre
.2 (9)
Gp = Go ?~ G1T * ,G,.2T
The T~he calculation is carried out
where G, ,and G~2 are constants.
o
as described above.
i s obtained with ? the aid of equation
With Q ]'o deteXni.ned, K
the actual performance of the indicated calculation is quite
time , In addition, the result of the
cumbersome and requires much t
? calcu,lat,an is not utilized and all
reviausly performed appro~mate
p
cal ave to be performed from the start.
f exact calculations which eliminates
Below i s outlined ? a.ned a me thod o
auxilia3r magnitudes Q H0 and J
the requirement of calculat~.ng the
? o erai,.ons through use of an aux.1~.a~"
and shortens the calculat~.ng p
vela meet of the table published by Lewis and
table and
is a de p
Randal (1) .
the utilization of the equation
The calculation ? ~.s based an
I ir;f~ t r~'~t 4r,4
)eclassified in Part - Sanitized Cor v Approved for Release 2012/04/09 : CIA-RDP
 Declassified in Part - Sanitized Copy Approved for Release 2012/04/09 : CIA-RDP82-00039R000200090003-8
?e easy to see that the last member in the righthand
It a.
i~ort ova.de~ a correct~.an for the results
portion of the e~uata,on pr "twined by the approximate ca.cu.ativn. we introduce the crter~
M1
298 298
ollawing f armulas, more suitable for ca~,cu~.~
*By rearrangement, the f ~ 2+
obtained ~ M ~ ,..~ (~ ? 298 ~ 16) ~
ating the magn~.tudes Ml and M 2 are ~,
1 12
yNwr
M~2 2(29 T
,w2
The table lists the values of M o' - M and M for different
2
f /T, which are useful for calculations).
tem eratures (and also values o 3.
p
the values for ate temperatures not listed in the table can be
. intex?med'~.
With the aid of the table it is
determined by linear interpolation.
easy to calculate the magnitude ~ F?/T from the f o rmula
,
? s a licable when the heat capacity of a portion
Equate. an (1L) ~- ~p
of the substances i5 d by or type () and for the
xpresse ~'
ified in Part - Sanitized Coov Aooroved for Release 2012/04/09 : CIA-RDP82-00039R000200090003-8
 Declassified in Part - Sanitized Copy Approved for Release 2012/04/09 : CIA-RDP82-00039R000200090003-8
 Declassified in Part - Sanitized Copy Approved for Release 2012/04/09 : CIA-RDP82-00039R000200090003-8
o
100
150
200
250
300
350
400
450
Soo
550
boo
650
700
273,16
3,6609
298.16
3.3539
323.16
3,09144
373,16
2,6798
1.23.1.6
2,3631
473,16
2.1134
523.16
1.9115
573.16
1.7)447
623,16
16047
673.16
1.!4855
723,16
1,3828
773,16
1.2394
823,16
12148
873,16
1.1453
923,16
1.0832
973,16
1, 02 75
750 1023,16
800 1073.16
85o 1123,16
900 1173.16
.950 1223,16
1000 1273.16
1050 1323.16
1100 13 73.16
1150 1423 46.
1200 1473.16.
0,97736
0.931.83
0.89034
o, 85240
0.81756
0.78545
0.75577
0,72825
.
070266
F ( P , ~ Y I ~ iip n., a ^ ~~ ~^ k? `~`di ,~^n"r?mrm ~~n ~ ~^ i~du""'au.. ~ux efa+ l.., ~':aa :a+~a^t.vn.~~(1 vt"am+i
0,0011
0,0003
0,0000
0.0000
0,0010
0.0003
0.0075
0.0024
0.0185
0.0063
0,0324
0.0115.
0,0)48)4
0,0180
0.o660
0,0257
0,o848
0.034)4
0.1044
0.0422
0,1249
0.05)49
0,1459
o,o666
o,J.674
0.1893
0.2116
0.2341
0,2569
0.2 798
0.3030
0,3263
0.3198
0.3 733
039.70
. oe)o8
0` LL4)46
0,0792
0,0927
0,1072
0,,1225
0,1387
0,1557
0.1737
o.19a5
0.2121.
0,2326
0,2762
0,2993
0,3232
0.0047
0,0000
0.0034
0,0227
0,0)491
0.0769
0,1040
04295
0,1530
0,1715
0.1943
0P2123
0.2288
0.2!139
0,2578
0. 2.706
0,2824
0,2933
0.3035
0,312.9
0,3216
0.3299
0.33 75
0.3447
0.3514,
0.3578:
~' Declassified in Part Sanitized Copy Approved for Release 2012/04/09 : CIA-RDP82 00039R000200090003-8
0,0040
0,0000
0.0032
0,0234
0.05147
0,0919
0,1322
0.173 7
0,2156
0,257,3
0,3006
0,3385
0.3777
0,)4160
o,4532
o.4893
0.5254
o. 5S8 6
0.5917
0,62)40
0.6552
o,6858
04h 7155
0.744.
0,7725
~~~"iPJr 91m{+I ~?
r4r'~"G
 Declassified in Part - Sanitized Copy Approved for Release 2012/04/09 : CIA-RDP82-00039R000200090003-8
~,
1. G. N, Lewis, M, Ian a, ,
fed S oi Qnta.~i c Techna.aal Press),
Chemical '1'hex~lodyflami es ), 4NTI (Ux~.
Kha.mteoret ( `x'heoxct Chema.stxy' Section) , Leningrad 1936.
~.c~1
2. G. Ulich, Usp. kha-m?, (Progress
Declassified in Part - Sanitized Copy Approved for Release 2012/04/09 : CIA-RDP82-00039R000200090003-8