Chemical Engineering > GATE 2012 > Phase Equilibria
Consider a binary liquid mixture at constant temperature T and pressure P. If the enthalpy change of mixing, ΔH=5x1x2, where x1 and x2 are the mole fraction of species 1 and 2 respectively, and the entropy change of mixing ΔS=-R[x1ln x1+x2ln x2] (with R=8.314 J/mol.K), then the minimum value of the Gibbs free energy change of mixing at 300 K occurs when
A
x1=0
B
x1=0.2
C
x1=0.4
D
x1=0.5

Correct : d

Similar Questions

For a pure liquid, the rate of change of vapour pressure with temperature is 0.1 bar/K in the temperature range of 300 to 350 K. If the boiling point of the liq...
#474 NAT
G denotes the Gibbs free energy of a binary mixture, nT denotes the total number of moles present in the system, μi is the chemical potential of the ith compo...
#556 MCQ
An azeotropic mixture of ethanol and water is to be separated in a distillation column using benzene as an entrainer. At the column operating conditions, two li...
#575 Fill in the Blanks

Related Topics

No tags found

Unique Visitor Count

Total Unique Visitors

Loading......