ABSTRACT

Densities and viscosities of chromium trioxide + potassium chromate + potassium dichromate + water quaternary mixtures and potassium chromate + potassium dichromate + water ternary mixtures have been measured from (298.15 to 333.15) K. The dependence of density and viscosity on temperature and concentration has been correlated. Apparent molar volumes, standard partial molar volumes, and the viscosity B-coefficient of chromium trioxide were calculated from the experimental measurements. The solute-mixed solvent interaction, solute solute interaction, and structure-making effect of chromium trioxide have been discussed using the Helper equation and the Jones-Dole equation. The relationship between relative changes in viscosity and solute-mixed solvent interaction has been probed.

Compounds

#	Formula	Name
1	CrK2O4	potassium chromate(VI)
2	Cr2K2O7	potassium dichromate
3	H2O	water

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	3 1	Mass density, kg/m3 ; Liquid	Mass fraction - 1; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	PYCNOM:UFactor:4	3
POMD	3 1	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Mass fraction - 1; Liquid Pressure, kPa; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	2
POMD	3 2	Mass density, kg/m3 ; Liquid	Mass fraction - 2; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	PYCNOM:UFactor:4	7
POMD	3 2	Viscosity, Pa*s ; Liquid	Mass fraction - 2; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	5
POMD	3 2 1	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 2; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid Solvent: Molality, mol/kg - 1; Liquid	Liquid	PYCNOM:UFactor:4	40
POMD	3 2 1	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid Solvent: Molality, mol/kg - 1; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	40

Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Densities and Viscosities of Chromium Trioxide + Potassium Chromate + Potassium Dichromate + Water from (298.15 to 333.15) K

Wang, J.-y.[Ji-yan], Wang, F.-a.[Fu-an], Zhang, P.[Peng], Li, C.-w.[Cheng-wei], Ren, B.-z.[Bao-zeng]

ABSTRACT