In a homogeneous solution, the fugacity of a component depends upon the (A) Pressure (B) Composition (C) Temperature (D) All (A), (B) and (C)

In a homogeneous solution, the fugacity of a component depends upon the
(A) Pressure
(B) Composition
(C) Temperature
(D) All (A), (B) and (C)
by

1 Answer

Answer :

(D) All (A), (B) and (C)
by

Related questions

In a homogeneous solution, the activity co-efficient of a component depends upon the (A) Pressure (B) Composition (C) Temperature (D) All (A), (B) and (C)

Description : In a homogeneous solution, the activity co-efficient of a component depends upon the (A) Pressure (B) Composition (C) Temperature (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Fugacity of a component in an ideal gas mixture is equal to the partial pressure of that component in the mixture. The fugacity of each component in a stable homogeneous solution at constant pressure and temperature __________ as its mole fraction increases. (A) Decreases (B) Decreases exponentially (C) Increases (D) Remain constant

Description : Fugacity of a component in an ideal gas mixture is equal to the partial pressure of that component in the mixture. The fugacity of each component in a stable homogeneous solution at constant pressure and ... increases. (A) Decreases (B) Decreases exponentially (C) Increases (D) Remain constant

Last Answer : (C) Increases

A reasonably general expression for vapour-liquid phase equilibrium at low to moderate pressure is φi yi P = Yi xifi° where, Φ is a vapor fugacity component, Yiis the liquid activity co-efficient and fi° is the fugacity of the pure component i. the Ki value (Yi = Ki xi) is therefore, in general a function of (A) Temperature only (B) Temperature and pressure only (C) Temperature, pressure and liquid composition xi only (D) Temperature, pressure, liquid composition xi and vapour composition yi

Description : A reasonably general expression for vapour-liquid phase equilibrium at low to moderate pressure is φi yi P = Yi xifi° where, Φ is a vapor fugacity component, Yiis the liquid activity co- ... and liquid composition xi only (D) Temperature, pressure, liquid composition xi and vapour composition yi

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Chemical reaction rate of a component depends upon the (A) Composition of the component only (B) Temperature of the system (C) Pressure of the system (D) All (A), (B) and (C)

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In an ideal solution, the activity of a component equals its (A) Mole fraction (B) Fugacity at the same temperature and pressure (C) Partial pressure (D) None of these

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Last Answer : (A) Mole fraction

Gibbs-Duhem equation relates composition in liquid phase and the __________ at constant temperature & pressure. (A) Fugacity (B) Partial pressure (C) Activity co-efficient (D) All (A), (B), and (C)

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Last Answer : (D) All (A), (B), and (C)

Diffusion co-efficient of a metal in a solid solution depends upon its (A) Composition (B) Temperature (C) Both (A) & (B) (D) Neither (A) nor (B)

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For multi-component multiple phases to be in equilibrium at the same pressure and temperature, the __________ of each component must be same in all phases. (A) Chemical potential (B) Fugacity (C) Both (A) and (B) (D) Neither (A) nor (B)

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Last Answer : (C) Both (A) and (B)

For a stable phase at constant pressure and temperature, the fugacity of each component in a binary system __________ as its mole fraction increases. (A) Decreases (B) Increases (C) Remain same (D) Decreases linearly

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Pick out the wrong statement. (A) Activity co-efficient is dimensionless. (B) In case of an ideal gas, the fugacity is equal to its pressure. (C) In a mixture of ideal gases, the fugacity of a component is equal to the partial pressure of the component. (D) The fugacity co-efficient is zero for an ideal gas

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The chemical potential of any constituent of an ideal solution depends on the __________ of the solution. (A) Temperature (B) Pressure (C) Composition (D) All (A), (B) and (C)

Description : The chemical potential of any constituent of an ideal solution depends on the __________ of the solution. (A) Temperature (B) Pressure (C) Composition (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

The rate of a homogeneous reaction is a function of (A) Temperature and pressure only(B) Temperature and composition only(C) Pressure and composition only(D) All temperature, pressure and composition

Description : The rate of a homogeneous reaction is a function of (A) Temperature and pressure only (B) Temperature and composition only (C) Pressure and composition only (D) All temperature, pressure and composition

Last Answer : (D) All temperature, pressure and composition

Variables affecting the rate of homogeneous reactions are (A) Pressure and temperature only (B) Temperature and composition only (C) Pressure and composition only (D) Pressure, temperature and composition

Description : Variables affecting the rate of homogeneous reactions are (A) Pressure and temperature only (B) Temperature and composition only (C) Pressure and composition only (D) Pressure, temperature and composition

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With lapse of time, the overhead composition of light component in case of batch distillation with constant reflux (A) Increases (B) Decreases (C) Remain same (D) May increase or decrease; depends on system

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Last Answer : (B) Decreases

In a continuous flow stirred tank reactor, the composition of the exit stream (A) Is same as that in the reactor (B) Is different than that in the reactor (C) Depends upon the flow rate of inlet stream (D) None of these

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Last Answer : (A) Is same as that in the reactor

Maximum hardenability of steel depends upon its (A) Chemical composition (B) Carbon content (C) Grain size (D) Alloying elements content

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Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity co-efficient of a gas at constant pressure ____with the increase of reduced temperature. (A) Decreases (B) Increases (C) Remains constant

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Last Answer : (B) Increases

The unit of fugacity is the same as that of the (A) Pressure (B) Temperature (C) Volume (D) Molar concentration

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Last Answer : (A) Pressure

With increase in reduced temperature, the fugacity co-efficient of a gas at constant reduced pressure (A) Increases (B) Decreases (C) Remain same (D) Decreases linearly

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Last Answer : (A) Increases

Fugacity and pressure are numerically not equal for the gases (A) At low temperature and high pressure (B) At standard state (C) Both (A) and (B) (D) In ideal state

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Fugacity and pressure are numerically equal, when the gas is (A) In standard state (B) At high pressure (C) At low temperature (D) In ideal state

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The partial molar enthalpy of a component in an ideal binary gas mixture of composition Z, at a temperature T and pressure P, is a function only of (A) T (B) T and P (C) T, P and Z (D) T and Z

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Last Answer : (B) T and P

The standard Gibbs free energy change of a reaction depends on the equilibrium (A) Pressure (B) Temperature (C) Composition (D) All (A), (B) and (C)

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Last Answer : (B) Temperature

Partial molar free energy of an element A in solution is same as its (A) Chemical potential (B) Activity (C) Fugacity (D) Activity co-efficient

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Last Answer : (A) Chemical potential

For an ideal liquid solution, which of the following is unity? (A) Activity (B) Fugacity (C) Activity co-efficient (D) Fugacity co-efficient

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The dew point of an unsaturated gas-vapor mixture does not depend upon the __________ of the mixture. (A) Composition (B) Temperature (C) Total pressure (D) All (A), (B) and (C)

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The ability of the cell membrane to act as a selective barrier depends upon (A) The lipid composition of the membrane (B) The pores which allows small molecules (C) The special mediated transport systems (D) All of these

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Pick out the wrong statement. (A) The mole fraction of solute is directly proportional to the molality of a 'dilute' solution (B) For a non-reacting binary mixture of ideal gases, the partial pressure distribution of both components is nonlinear in the case of steady state unimolal unidirectional diffusion (C) Azeotropes obey Raoult's law at all temperature (D) The relative volatility of a binary mixture at the Azeotropic composition is 1

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The relation connecting the fugacities of various components in a solution with one another and to composition at constant temperature and pressure is called the __________ equation. (A) Gibbs-Duhem (B) Van Laar (C) Gibbs-Helmholtz (D) Margules

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In an ideal gas mixture, fugacity of a species is equal to its (A) Vapor pressure (B) Partial pressure (C) Chemical potential (D) None of these

Description : In an ideal gas mixture, fugacity of a species is equal to its (A) Vapor pressure (B) Partial pressure (C) Chemical potential (D) None of these

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For water at 300°C, it has a vapour pressure 8592.7 kPa and fugacity 6738.9 kPa Under these conditions, one mole of water in liquid phase has a volume of 25.28 cm3 and that in vapour phase in 391.1 cm3.Fugacity of water (in kPa) at 9000 kPa will be (A) 6738.9 (B) 6753.5 (C) 7058.3 (D) 9000

Description : For water at 300°C, it has a vapour pressure 8592.7 kPa and fugacity 6738.9 kPa Under these conditions, one mole of water in liquid phase has a volume of 25.28 cm3 and that in vapour phase in 391.1 cm3.Fugacity of water (in kPa) at 9000 kPa will be (A) 6738.9 (B) 6753.5 (C) 7058.3 (D) 9000

Last Answer : (B) 6753.5

“The fugacity of a gas in a mixture is equal to the product of its mole fraction and its fugacity in the pure state at the total pressure of the mixture". This is (A) The statement as per Gibbs-Helmholtz (B) Called Lewis-Randall rule (C) Henry's law (D) None of these

Description : “The fugacity of a gas in a mixture is equal to the product of its mole fraction and its fugacity in the pure state at the total pressure of the mixture". This is (A) The statement as per Gibbs-Helmholtz (B) Called Lewis-Randall rule (C) Henry's law (D) None of these

Last Answer : (B) Called Lewis-Randall rule

The standard state of a gas (at a given temperature) is the state in which fugacity is equal to (A) Unity (B) Activity (C) Both (A) & (B) (D) Neither (A) nor (B)

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Which of the following is not affected by temperature changes? (A) Fugacity (B) Activity co-efficient (C) Free energy (D) None of these

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For a given substance at a specified temperature, activity is __________ to fugacity. (A) Directly proportional (B) Inversely proportional (C) Equal (D) None of these

Description : For a given substance at a specified temperature, activity is __________ to fugacity. (A) Directly proportional (B) Inversely proportional (C) Equal (D) None of these

Last Answer : (A) Directly proportional

Which of the following is affected by the temperature? (A) Fugacity (B) Activity co-efficient (C) Free energy (D) All (A), (B) & (C)

Description : Which of the following is affected by the temperature? (A) Fugacity (B) Activity co-efficient (C) Free energy (D) All (A), (B) & (C)

Last Answer : (D) All (A), (B) & (C)

. The half life period of a radioactive element depends upon the (A) Temperature (B) Pressure (C) Amount of element present (D) None of these

Description : . The half life period of a radioactive element depends upon the (A) Temperature (B) Pressure (C) Amount of element present (D) None of these

Last Answer : (D) None of these

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Description : The vapour pressure exerted by the moisture contained in a wet solid depends upon the (A) Nature of the moisture (B) Temperature (C) Nature of the solid (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

In a counter-current liquid extractor (A) Both liquids flow at fixed rate (B) Both liquids can have any desired flow rate (C) Only one of the liquids may be pumped at any desired rate (D) Liquid’s flow rate depends upon the temperature and pressure

Description : In a counter-current liquid extractor (A) Both liquids flow at fixed rate (B) Both liquids can have any desired flow rate (C) Only one of the liquids may be pumped at any desired rate (D) Liquid’s flow rate depends upon the temperature and pressure

Last Answer : (C) Only one of the liquids may be pumped at any desired rate

Diffusion co-efficient generally depends upon the temperature, pressure & the nature of the components of the system. Its dimension is not the same as that of the (A) Mass transfer co-efficient (B) Thermal diffusivity (C) Kinematic viscosity (D) Volumetric diffusivity

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For an ideal gas, the internal energy depends upon its __________ only. (A) Molecular size (B) Temperature (C) Volume (D) Pressure

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Last Answer : (C) Both (A) & (B)

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Last Answer : (B) Temperature

Efficiency of a heat engine working on Carnot cycle between two temperature levels depends upon the (A) Two temperatures only (B) Pressure of working fluid (C) Mass of the working fluid (D) Mass and pressure both of the working fluid

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Last Answer : (A) Two temperatures only

Enthalpy of a gas depends upon its (A) Temperature (B) Mass (C) Volume (D) Pressure

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Last Answer : (A) Temperature

Pick out the wrong statement. (A) The conversion for a gas phase reaction increases with decrease in pressure, if there is an increase in volume accompanying the reaction (B) With increase in temperature, the equilibrium constant increases for an exothermic reaction (C) The equilibrium constant of a reaction depends upon temperature only (D) The conversion for a gas phase reaction increases with increase in pressure, if there is a decrease in volume accompanying the reaction

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Internal energy of a gas obeying Van-Der-Waals equation of state, [p + (a/v2)] (V - b) = RT, depends upon its (A) Pressure & temperature (B) Pressure & specific volume (C) Temperature & specific volume (D) Temperature only

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The electrolyte composition of standard WHO oral rehydration solution is based upon that of: A. Enterotoxigenic E. coli diarrhoea stools B. Cholera stools in adults C. Cholera stools in children D. Rotavirus diarrhoea stools

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