2. Incorrect statement is (d) (a) is correct i.e. the unit of fugacity is equiva

Question

2. Incorrect statement is (d)

(a) is correct i.e. the unit of fugacity is equivalent to unit of pressure because it is equal to the pressure of an ideal gas which has the same chemical potential as the real gas.

(b) is correct i.e. activity is equal to mole fraction when it is an ideal solution because for an ideal solution ai=fi/fio=xi

(c) is correct as an excess property is the difference between the real and the ideal solution at the same pressure, temperature, and composition.The excess properties of ideal solution are “zero”. So, the excess property can be viewed as the corrections that must be added to the ideal solution equations in order to obtain the correct property of solution.

(d) is incorrect as the residual properties are differences between a real mixture and an ideal gas at the same density, temperature, and composition.

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( [127]A()" D . 1. Gibbs-Dyh Which one of the following statements for a rule? AB NOT obeying Gib binary misture is No ] 2. Which one of the following statements is ORRE (a) The unit of fugacityds equivalent to the unit of presi solution (a) The unit of tugacityis equivalent to the unit of pressure (b) Activity equals to "mole fraction" is an ideal solution erined by the difference between real solution and ideal solution (d) Resid zal property is the deviation between real gas and ideal liquid. 3. Which one of the following statements is CORREC (a) The fugacity coefficient can be less than 1 (b) The activity coefficient can be less than 0 (c) The activity coefficient can be equal to zero (d) The compressibility factor (2) can be equal to zero Which one of the following statements is NOT CORRECT for the van der Waals e

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