ABSTRACT

Excess molar volumes, VEijk , speeds of sound, uijk ,of Tetrahydropyran (i) + benzene (j) + cyclohexane or n-hexane or n-heptane (k) ternary mixtures have been measured as a function of composition at 308.15K and atmospheric pressure The observed speeds of sound data of the investigated ternary mixtures have been utilized to calculate their isentropic compressibilities changes of mixing,eSEijk. The VEijk, and have been fitted to the Redlich-Kister equation to calculate ternary adjustable parameters and standard deviations. Connectivity parameters of third degree of the constituents of mixtures ( which in turn depends on the topology of a molecule) have been employed to determine excess molar volumes, VEijk, and isentropic compressibilities changes of mixing,eSEijk. It has been observed that VEijk and values calculated by the Graph theory ( which involves connectivity parameter of third degree of a molecule)compare well with their corresponding experimental values.

Compounds

#	Formula	Name
1	C6H14	hexane
2	C7H16	heptane
3	C5H10O	tetrahydropyran
4	C6H12	cyclohexane
5	C6H6	benzene

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	1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Pycnometric method	1
POMD	1	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Sing-around technique in a fixed-path interferometer	1
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Pycnometric method	1
POMD	2	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Sing-around technique in a fixed-path interferometer	1
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Pycnometric method	1
POMD	3	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Sing-around technique in a fixed-path interferometer	1
POMD	4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Pycnometric method	1
POMD	4	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Sing-around technique in a fixed-path interferometer	1
POMD	5	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Pycnometric method	1
POMD	5	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Sing-around technique in a fixed-path interferometer	1
POMD	5 3 2	Speed of sound, m/s ; Liquid	Mole fraction - 3; Liquid Mole fraction - 5; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	25
POMD	5 3 2	Excess molar volume, m3/mol ; Liquid	Mole fraction - 3; Liquid Mole fraction - 5; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Direct dilatometry	29
POMD	5 4 3	Speed of sound, m/s ; Liquid	Mole fraction - 3; Liquid Mole fraction - 5; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	23
POMD	5 4 3	Excess molar volume, m3/mol ; Liquid	Mole fraction - 3; Liquid Mole fraction - 5; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Direct dilatometry	29
POMD	5 1 3	Speed of sound, m/s ; Liquid	Mole fraction - 3; Liquid Mole fraction - 5; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	25
POMD	5 1 3	Excess molar volume, m3/mol ; Liquid	Mole fraction - 3; Liquid Mole fraction - 5; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	Direct dilatometry	30

Thermodynamics Research Center / ThermoML | Thermochimica Acta

Excess molar volumes and isentropic compressibilities changes of mixing of tetrahydropyran + benzene + cyclo or n-alkanes ternary mixtures at 308.15 K

Siwach, R. K.[Rajesh K.], Sharma, D.[Dimple], Sharma, V. K.

ABSTRACT