CHEN 3101 Lecture Notes - Lecture 1: Paga
25 Dec 2014
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Proposalfill in data where there isn"t any if it"s cubic outside, can it be cubic inside? can superheat/supercool a little bit, but further out, more likely to change phase can never measure the metastable parts metastable. Maxwell equal area construction 1875 called equal area construction b/c saying there"s 1 value of p which = eqbm vapor p you"ll get 0 integral. Critical point no pt where derivative = 0. Know: tc(a,b), vc(a,b), pc(a,b) you can calculate critical t and c. -> think of tc and pc as the parameters rather than a and b. -> solve for a and b as functions of critical t and c. Solve for a,b as functions of tc, and pc; Van der waals: dimensionless polynomial form start w/ original eqn of state multiply through by. Rewrite a + b in terms of pc + tc.
