The number of degrees of freedom for an azeotropic mixture in a two component vapourliquid equilibria is/are__________________?
Correct answer: B. One
- A. Zero
- B. One
- C. Two
- D. Three
Explanation
The ordinary binary two-phase system has two degrees of freedom, but an azeotrope imposes the extra condition that liquid and vapour compositions are equal. Thus the remaining variance is 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
The compressibility factor of a gas is given by (where, V1 = actual volume of the gas V2 = gas volume predicted by ideal gas law)____________________?
Molar heat capacity of water in equilibrium with ice at constant pressure is __________ Kcal/kg mole. °K___________________?
At 60° C, vapour pressure of methanol and water are 84.562 kPa and 19.953 kPa respectively. An aqueous solution of methanol at 60° C exerts a pressure of 39.223 kPa; the liquid phase and vapour phase mole fractions of methanol are 0.1686 and 0.5714 respectively. Activity co-efficient of methanol is__________________?
At the critical point of a substance____________?
For any system, what is the minimum number of degrees of freedom ?
If heat contents of CH4, C2H4 and C3H8 are -17.9, 12.5 and -24.8 kcal/mole respectively, than ΔH for the reaction CH4(g) + C2H4(g) ⇌ C3H8(g) will be _____________ Kcal?