Density

ρ

ultrasonic speed

u

and viscosity

η

of binary mixtures of 2-methyl-2-propanol (2M2P) with acetonitrile (AN)

propionitrile (PN) and butyronitrile (BN) including those of pure liquids are measured over the entire composition range at temperatures 298.15

303.15 and 308.15 K. From these experimental data

the excess available volume

V

a

E

excess free volume

V

f

E

excess isothermal compressibility

β

T

E

excess thermal expansion coefficient

a

E

and excess internal pressure

π

i

E

are calculated. The variation of these properties with composition and temperature are discussed in terms of molecular interactions between unlike molecules of the mixtures. It is found that the values of V

a

E

V

f

E

β

T

E

and a

E

are positive and those of π

i

E

are negative for all the mixtures at each temperature studied

indicating the presence of weak interactions between 2M2P and AN/PN/BN molecules. The variations of

V

a

E

V

f

E

β

T

E

a

E

and π

i

E

values with composition indicate that the interactions in these mixtures follow the order:AN 关键词: 2-methyl-2-propanol

homologous nitriles

excess properties

molecular interactions

scaled particle theory Abstract: Density

ρ

ultrasonic speed

u

and viscosity

η

of binary mixtures of 2-methyl-2-propanol (2M2P) with acetonitrile (AN)

propionitrile (PN) and butyronitrile (BN) including those of pure liquids are measured over the entire composition range at temperatures 298.15

303.15 and 308.15 K. From these ex

perimental data

the excess available volume

V

a

E

excess free volume

V

f

E

excess isothermal compressibility

β

T

E

excess thermal expansion coefficient

a

E

and excess internal pressure

π

i

E

are calculated. The variation of these properties with composition and temperature are discussed in terms of molecular interactions between unlike molecules of the mixtures. It is found that the values of V

a

E

V

f

E

β

T

E

and a

E

are positive and those of π

i

E

are negative for all the mixtures at each temperature studied

indicating the presence of weak interactions between 2M2P and AN/PN/BN molecules. The variations of

V

a

E

V

f

E

β

T

E

a

E

and π

i

E

values with composition indicate that the interactions in these mixtures follow the order:AN Key words: 2-methyl-2-propanol

homologous nitriles

excess properties

molecular interactions

scaled particle theory 引用本文 K. Rajagopal

S. Chenthilnath. Study on Excess Thermodynamic Parameters and Theoretical Estimation of Ultrasonic Velocity Using Scaled Particle Theory in Binary Liquid Mixtures of 2-Methyl-2-propanol and Nitriles at Different Temperatures[J

]

.

2010

18(5): 804-816. K. Rajagopal

S. Chenthilnath. Study on Excess Thermodynamic Parameters and Theoretical Estimation of Ultrasonic Velocity Using Scaled Particle Theory in Binary Liquid Mixtures of 2-Methyl-2-propanol and Nitriles at Different Temperatures[J

]

.

2010

18(5): 804-816. 使用本文 0 / / 推荐 导出引用管理器 EndNote|Ris|BibTeX 链接本文: https://cjche.cip.com.cn/CN/ https://cjche.cip.com.cn/CN/Y2010/V18/I5/804