Solubility curve of an addition compound in a perfect solution

Solubility Curve of an Addition Compound in a Perfect Solution. 

Let us return to equation (23.10) and apply it to a perfect solution. For this case we know that cf, 20.1) 

SO that substituting into (23.10) and employing the latent heat of fusion (i.e. dissociation) of the addition compound Afh we have  

This equation may now be integrated from the indifferent point, where X2 and T have the values xj, and to the point and T. Assuming that the latent heat is constant in this range of temperature we obtain /] ho / 1 ]  

When the addition compound contains one molecule of each component we have 

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