Van Laar eqs. coeff. from azeotropic data (ethanol - n heptane) - 1st form.  |POLVER05_3
f(A) = log(gamma1)-A*x2^2/(A*x1/B+x2)^2  #
f(B) = log(gamma2)-B*x1^2/(x1+B*x2/A)^2  #
t=70.9  #
pw1=49  #
x1=(pw1/46.07)/(pw1/46.07+(100-pw1)/100.2)  #
P2=10^(6.9024-1268.115/(216.9+t))  #
P1=10^(8.04494-1554.3/(222.65+t))  #
gamma1=760/P1  #
x2=1-x1  #
gamma2=760/P2  #
g1calc=10^(A*x2^2/(A*x1/B+x2)^2)  #
g2calc=10^(B*x1^2/(x1+B*x2/A)^2)  #
A(0)=1.0
B(0)=1.0