Яг өмнө минь хэвтэж байгаа зүйлийг олж харах л надад хамгаас хэцүү байдаг. Хөдөлмөрт шунан дурлахгүйгээр авъяас билэгтэн, суут ухаантны аль аль нь ч гарахгүй. (Д.И.Менделеев) Ажиллах л хэрэгтэй! Ажил хөдөлмөр гэдгийг мэдэхгүй учраас л бид амьдралыг хар бараанаар харж уйтгарлан суудаг. (А.П.Чехов)

2012/01/14

1 компонент системын фазын тэнцвэр

For the melting line, for example, solid and liquid coexist, and
μs(T, p) = μl(T, p)


One equation [μs(T, p) = μl(T, p)], two variables (T, p). This means that coexistence of two phases is described by T(p) or p(T). e.g. a line in the (T, p) phase diagram.
At the triple point, the chemical potential of all three phases are the same… solid, liquid and gas coexist.
μs(T, p) = μl(T, p) = μg(T, p)
Two equations, two variables. This defines a unique point (Tt, pt) in the (T, p) phase diagram.
For H2O, Tt = 273.16 K and pt = 0.006 bar
(Recall the definition of the temperature scale in Lecture # 2)


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