ABSTRACT

Densities of solutions of sodium bromide, sodium perchlorate, sodium tetraphenylborate, and tetraphenylphosphonium bromide in methanol at the temperatures ranging from 283.15 to 313.15 K have been measured. Ultrasound velocities for the above systems at T = 298.15 K have been determined. From the obtained data, the partial molar volumes and the partial molar isentropic compressibilities for electrolytes in solution have been estimated. Division into the ionic contributions has been proposed on the basis of the reference electrolyte method. The existence of the high-volume intermediate shell with an enhanced structure has been suggested.

Compounds

#	Formula	Name
1	C24H20BrP	tetraphenylphosphorane bromide
2	C24H20BNa	sodium tetraphenylboron
3	BrNa	sodium bromide
4	ClNaO4	sodium perchlorate
5	CH4O	methanol

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Variable	Constraint	Phase	Method	#Points
POMD	5	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Pulse-echo method	1
POMD	5	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid		Liquid Air at 1 atmosphere	VIBTUB:UFactor:2	24
POMD	5 3	Speed of sound, m/s ; Liquid	Molality, mol/kg - 3; Liquid	Temperature, K; Liquid	Liquid Air at 1 atmosphere	Pulse-echo method	11
POMD	5 3	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 3; Liquid Temperature, K; Liquid		Liquid Air at 1 atmosphere	VIBTUB:UFactor:2	89
POMD	5 4	Speed of sound, m/s ; Liquid	Molality, mol/kg - 4; Liquid	Temperature, K; Liquid	Liquid Air at 1 atmosphere	Pulse-echo method	12
POMD	5 4	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 4; Liquid Temperature, K; Liquid		Liquid Air at 1 atmosphere	VIBTUB:UFactor:2	91
POMD	5 2	Speed of sound, m/s ; Liquid	Molality, mol/kg - 2; Liquid	Temperature, K; Liquid	Liquid Air at 1 atmosphere	Pulse-echo method	8
POMD	5 2	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 2; Liquid Temperature, K; Liquid		Liquid Air at 1 atmosphere	VIBTUB:UFactor:2	90
POMD	5 1	Speed of sound, m/s ; Liquid	Molality, mol/kg - 1; Liquid	Temperature, K; Liquid	Liquid Air at 1 atmosphere	Pulse-echo method	12
POMD	5 1	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 1; Liquid Temperature, K; Liquid		Liquid Air at 1 atmosphere	VIBTUB:UFactor:2	84

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Apparent molar volumes, expansibilities, and isentropic compressibilities of selected electrolytes in methanol

Wawer, J.[Jaroslaw], Krakowiak, J.[Joanna], Grzybkowski, W.[Waclaw]

ABSTRACT