FIU CHM 3410 - Homework 8 Solution on Physical Chemistry (1) (6 pages)

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Homework 8 Solution on Physical Chemistry (1)



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Homework 8 Solution on Physical Chemistry (1)

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Pages:
6
School:
Florida International University
Course:
Chm 3410 - Physical Chemistry I

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Solutions 8 1 128 126 124 122 120 C 118 sh is ar stu ed d vi y re aC s o ou urc rs e eH w er as o co m 116 114 112 110 108 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 zM 0 36 Th 0 25 https www coursehero com file 11467745 Homework 8 Solution on Physical Chemistry 0 75 0 82 1 2 P 1 Liquid mixture 95 94 93 P 2 Liquid solution richer in CH4 Solid CH4 sh is ar stu ed d vi y re aC s o ou urc rs e eH w er as o co m 92 91 P 2 Liquid solution richer in CF4 Solid CF4 90 P 2 Liquid solution richer in CF4 Liquid solution richer in CH4 T K 89 88 87 86 P 2 Liquid solution richer in CF4 Solid CH4 85 84 P 2 Solid CF4 Solid CH4 Th 83 0 0 0 1 0 2 0 3 0 4 0 5 x CF4 https www coursehero com file 11467745 Homework 8 Solution on Physical Chemistry 0 6 0 7 0 8 0 9 1 0 3 54 52 50 C 48 46 sh is ar stu ed d vi y re aC s o ou urc rs e eH w er as o co m 44 42 40 0 0 2 0 4 0 6 0 8 1 xA a When xA falls to 0 47 a second liquid phase appears The amount of new phase increases as xA falls and the amount of original phase decreases until at xA 0 314 only one liquid remains b The mixture has a single liquid phase at all compositions Th 4 https www coursehero com file 11467745 Homework 8 Solution on Physical Chemistry sh is ar stu ed d vi y re aC s o ou urc rs e eH w er as o co m 5 Initially at the temperature corresponding to the x axis two liquid phases are present with compositions of I xB 0 87 and II xB 0 04 The relative abundance I II is determined by the lever rule 0 8 0 04 0 87 0 80 10 86 As the temperature is increased along the isopleth the dashed vertical line phase I becomes richer in A poorer in B and on the contrary phase II is being enriched in the B component Meanwhile according to the lever rule the amount of phase I increase as does the relative abundance I II At T1 when the isopleth crosses the phase boundary formally still two phases are at equilibrium the B rich solution phase and an infinitesimal amount of the A rich solution Above T1 only one liquid phase merged solution exists as the



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