Menu
Home / Chemical Engineering / Chemical Engineering Thermodynamics :: Discussion

Discussion :: Chemical Engineering Thermodynamics

  1. The molar excess Gibbs free energy, gE, for a binary liquid mixture at T and P is given by, (gE/RT) = A . x₁. x₂, where A is a constant. The corresponding equation for ln y₁, where y₁ is the activity co-efficient of component 1, is

    2. A.

     A . x₂²
    B.

     Ax₁
    C.

     Ax₂
    D.

     Ax₁²

    View Answer

    Workspace

    View Answer

    Answer : Option A

    Explanation :

    Given, GERT=Ax1x2⇒nGERT=An1n2n
    On partially differentiating it (∂nGERT∂n1)T,P,n2=An1n2n=Ax22
    As (∂nGERT∂n1)T,P,n2=¯nGElRT=lnγ1
    Hence lnγ1=Ax22

Write your comments here:

Be The First To Comment