x c 0 0 . 2 0 . 4 0 . 6 0 . 8 1 0 0 . 1 0 . 2 0 . 3 0 . 4 0 . 5 0 . 6 0 . 7 0 . 8 0 . 9 1 N I I+N (a) FMT Onsager c$_{1}$ c 2 0 0 . 2 0 . 4 0 . 6 0 . 8 1 0 0 . 05 0 . 1 0 . 15 0 . 2 0 . 25 0 . 3 0 . 35 (b) N I+N Onsager FMT I x S 0 0 . 2 0 . 4 0 . 6 0 . 8 1 0 0 . 1 0 . 2 0 . 3 0 . 4 0 . 5 0 . 6 0 . 7 0 . 8 0 . 9 1 $^{S}$tot S$_{2}$ S$_{1}$ FMT (d) x p ∗ 0 0 . 2 0 . 4 0 . 6 0 . 8 1 0 0 . 5 1 1 . 5 2 2 . 5 3 3 . 5 4 I I + N (c) N Onsager FMT FIG. 3: Results for λ = 1 . 7. The notation is the same as in Fig. 1. In (c) for FMT, if one keeps a constant fluid composition, for example at around x = 0 . 59 but increases the pressure from p ∗ = 0 to p ∗ = 1 the state changes from I → I + N$_{2}$ → N$_{2}$ → I + N$_{2}$ → N$_{2}$ . In (d) we present the order parameters only for FMT. 33