Assume that a sealed vessel at constant pressure of 1 bar initially contains 2.00 mol of NO2(g . The system is allowed to equilibrate with respect to the reaction The number of moles of NO2(g) and N2O4(g) at equilibrium is
respectively, where
is the extent of reaction.
a. Derive an expression for the entropy of mixing as a function of .
b. Graphically determine the value of for which has its maximum value.
c. Write an expression for Gpure as a function of . Use Equation 6.104 to obtain values of
for NO2 and N2O4
d. Plot as a function of for and graphically determine the value of
for which Gmixture has its minimum value. Is this value the same as for part (b)?
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