2
0
2011
ape
kor
0
journal
Original
Apelblat, A.[Alexander]
Korin, E.[Eli]
J. Chem. Eng. Data
2011
2020-09-29
Temperature Dependence of Vapor Pressures over Saturated Aqueous Solutions at Invariant Points of the NaCl + KNO3 + H2O, NaCl + Na2CO3 + H2O, and NaCl + Na2SO4 + H2O Systems
Vapor pressures of water over saturated solutions with regard to two salts, in the NaCl + KNO3 + H2O, NaCl + Na2CO3 + H2O, and NaCl + Na2SO4 + H2O systems are reported in the (278 to 323) K temperature range. The determined vapor pressures were used to obtain the water activities, the molar enthalpies of vaporization and the osmotic coefficients. Compositions of invariant points from the literature were correlated as a function of temperature with the aid of quadratic equations. These equations served to determine the molar enthalpies of solution.
Vapour pressures, water activities, invariant points, ternary systems
NaCl+KNO3+H2O, NaCl+Na2CO3+H2O and NaCl+Na2SO4+H2O
10.1021/je1009653
4
56
988-994
1
InChI=1S/ClH.Na/h1H;/q;+1/p-1
FAPWRFPIFSIZLT-UHFFFAOYSA-M
sodium chloride
ClNa
1
Commercial source
1
99
2
Stated by supplier
2
InChI=1S/K.NO3/c;2-1(3)4/q+1;-1
FGIUAXJPYTZDNR-UHFFFAOYSA-N
potassium nitrate
nitric acid potassium salt
KNO3
1
Commercial source
1
99
2
Stated by supplier
3
InChI=1S/CH2O3.2Na/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2
CDBYLPFSWZWCQE-UHFFFAOYSA-L
sodium carbonate
CNa2O3
1
Commercial source
1
99
2
Stated by supplier
4
InChI=1S/2Na.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2
PMZURENOXWZQFD-UHFFFAOYSA-L
sodium sulfate
sodium sulphate
Na2O4S
1
Commercial source
1
99
2
Stated by supplier
5
InChI=1S/H2O/h1H2
XLYOFNOQVPJJNP-UHFFFAOYSA-N
water
H2O
1
Commercial source
1
99.5
3
Estimated by the compiler
1
1
1
5
1
2
1
Principal objective of the work
GPC
XXX
5/13/2011
1
Vapor or sublimation pressure, kPa
Closed cell (Static) method
Gas
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Gas
Liquid
Crystal
1
Crystal
2
1
Temperature, K
Gas
1
280.45
5
1
0.72
3
1
0.017
1
281.85
5
1
0.79
3
1
0.018
1
284.55
5
1
0.94
3
1
0.021
1
286.35
5
1
1.058
4
1
0.024
1
289.55
5
1
1.283
4
1
0.028
1
290.75
5
1
1.385
4
1
0.026
1
293.45
5
1
1.639
4
1
0.027
1
294.25
5
1
1.704
4
1
0.027
1
296.15
5
1
1.905
4
1
0.028
1
298.85
5
1
2.25
4
1
0.029
1
299.75
5
1
2.362
4
1
0.03
1
301.65
5
1
2.62
4
1
0.031
1
303.25
5
1
2.886
4
1
0.032
1
305.15
5
1
3.187
4
1
0.033
1
308.65
5
1
3.869
4
1
0.036
1
309.55
5
1
4.041
4
1
0.037
1
312.25
5
1
4.65
4
1
0.04
1
314.95
5
1
5.318
4
1
0.043
1
316.55
5
1
5.756
4
1
0.044
1
321.45
5
1
7.212
4
1
0.051
2
3
1
1
1
5
1
Principal objective of the work
GPC
XXX
5/13/2011
1
Vapor or sublimation pressure, kPa
Closed cell (Static) method
Gas
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Gas
Liquid
Crystal
1
Crystal
3
1
Temperature, K
Gas
1
280.25
5
1
0.706
3
1
0.017
1
280.45
5
1
0.716
3
1
0.017
1
284.95
5
1
0.988
3
1
0.022
1
285.45
5
1
1.008
4
1
0.023
1
289.65
5
1
1.32
4
1
0.025
1
289.85
5
1
1.34
4
1
0.026
1
294.25
5
1
1.794
4
1
0.027
1
294.45
5
1
1.779
4
1
0.027
1
298.65
5
1
2.334
4
1
0.03
1
298.75
5
1
2.322
4
1
0.03
1
302.95
5
1
2.996
4
1
0.032
1
303.25
5
1
3.023
4
1
0.033
1
307.55
5
1
3.929
4
1
0.037
1
308.05
5
1
4.023
4
1
0.037
1
312.25
5
1
5.086
4
1
0.042
1
312.55
5
1
5.161
4
1
0.042
1
316.85
5
1
6.384
4
1
0.049
1
317.05
5
1
6.533
4
1
0.05
1
321.45
5
1
8.199
4
1
0.055
1
321.85
5
1
8.273
4
1
0.055
3
1
1
5
1
4
1
Principal objective of the work
GPC
XXX
5/13/2011
1
Vapor or sublimation pressure, kPa
Closed cell (Static) method
Gas
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Gas
Liquid
Crystal
1
Crystal
4
1
Temperature, K
Gas
1
280.15
5
1
0.708
3
1
0.017
1
280.15
5
1
0.708
3
1
0.017
1
284.55
5
1
0.981
3
1
0.022
1
284.95
5
1
1.003
4
1
0.023
1
289.35
5
1
1.379
4
1
0.026
1
289.35
5
1
1.366
4
1
0.026
1
293.95
5
1
1.867
4
1
0.028
1
293.95
5
1
1.853
4
1
0.028
1
298.45
5
1
2.477
4
1
0.03
1
298.65
5
1
2.504
4
1
0.03
1
302.95
5
1
3.273
4
1
0.034
1
303.15
5
1
3.303
4
1
0.034
1
307.55
5
1
4.289
4
1
0.038
1
307.85
5
1
4.344
4
1
0.038
1
312.05
5
1
5.574
4
1
0.043
1
312.25
5
1
5.578
4
1
0.044
1
312.55
5
1
5.669
4
1
0.044
1
316.65
5
1
7.188
4
1
0.05
1
317.15
5
1
7.322
4
1
0.051