Theoretical treatment of phase diagrams and mixing heats based on hydrogen-bond configuration has been expanded to hydrogen-bonded solutions containing molecules with proton acceptors but without proton donors. The crystal liquid phase diagrams and the mixing heats of systems of ketone/1-alcohol were reproduced by the theory. Parameters determined from fitting enabled us to estimate the ratio of the number of acceptors associated with donors in the total number of acceptors and the relative contribution of association between molecules of different kinds.