Question

5. Below you find a sketch of the p,T-phase diagram of H20, indicating preferred physical states of H20 at different temperatures and pressure. The regions labeled with In, XI, and III, stand for different forms of solid H20. For example, ice Ih is the standard ice (there are more than 12 different forms of solid H2O). Draw two diagrams for the chemical potentials as a function of temperature (from Ti to T2) of each of the phases (there are 5 of them: In, XI, III, vapor and liquid). One diagram should refer to the pressure pi (approximately 1 atm), the second diagram should refer to the pressure p2 (approx. 1000 atm). [10pt for each diagram.] To repeat: there are two diagrams to sketch (neither 5 nor 10), each containing the chemical potential as a function of temperature for all five phases of water, In, XI, III, vapor and liquid. P2TTY liquid pressure, p vapor temperature, T

Answer 1

Ans: At 1 atm Pressure: XI In II Liquid Vapour. will int Liquid m your Lloud line 1 Chemical petential pus 1903 One I Temperature to Tz At At 1000 Atm pressines 1000 atm pressme: In II Hauid , quid Japour solid line < Liquid Line Chemical poter yo w T - 'Ftemperbatine To where If and to are freezing and boiling temperatures . If pressure is increased, the chemical potentials of all the phases will increese due to autheo decrease in molar volume. The intersecting points (If & Tz) will move leftward