Hello guys!
I'm trying to calculate specific enthalpy of a binary solution. It's a homework problem.
The solution is described as two miscible liquids (1 and 2). Conditions are usually given at mild temperatures and pressures close to atmospheric.
Also, it's stated that I should use as a reference state the standard state at 25 ºC - that is, pure real liquids at 1 bar and 25 ºC.
The only data given is the solution heat capacity, which is expressed as:
CP = CP(ideal solution) + CP(excess)
CP(x,T) = (a1+b1T)*x + (a2+b2T)*(1-x) + (a0+b0T)*x3*(1-x)2
Where "x" is the molar fraction of liquid "1"; "ai" and "bi" are constants.
How could I do this?