Gibbs free energy of mixing at constant pressure and temperature is always__________________?
Correct answer: D. - ve
- A. 0
- B. ∞
- C. + ve
- D. - ve
Explanation
Mixing stable, unlike components at constant temperature and pressure lowers Gibbs free energy, so ΔGmix is negative. For an ideal mixture this follows from ΔGmix = RTΣxi ln xi, since each xi is less than one.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Chemical Engineering Thermodynamics
598 free Chemical Engineering Thermodynamics MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Chemical Engineering Thermodynamics questions
For an incompressible fluid, the _______________ is a function of both pressure as well as temperature?
For a cyclic process, a fixed ratio between heat and work___________________?
Equilibrium constant of a reaction varies with the____________________?
In a homogeneous solution, the fugacity of a component depends upon the __________________?
Which of the following is an extensive property of a system ?
In the equation, PVn = Constant, if the value of n = 0, then it represents a reversible ______________ process?