Question

3. What are the solvent and solute activities and activity coefficients for a component having 25% mole fraction and obeying the vapor pressure equation P=78.8x; e (0.65x3 +0.18x})? (Hint: think about Raoult's and Henry's Laws) 4. The Debye-Huckel limiting law is strictly valid only in the limit of infinite dilution. A more widely applicable equation is the Debye-Huckel equation:

Answer 1

Raoult's 1024 Solubi l ielvet Henry's law Golf Now, 25 % moie grachrony P,=48.84260-657 +0:18mm) P= 78.310.45) Cossio.253*+ 0.18 (0.25) P. = 61.73 ... Or is the activity of x & described by activity coeffreient e & [X]: OlyXbx] Achrit of an effective concentrahovi twe set up inperimental parameters such that yox is very close to 'one, close enough to say that activity and concentration are equal. online to Debye-Hückle eq cimiting law. -logy: 0.512 ve 1 e o Ilog, Vi=2 WI Thaju/305) I to change of son a licebre diameter u= ioure strength of sola Tonic strength focscribes total concentration of love Euhon نا ن کے ا - 1 حالا 4 4 0 = z chaye q each ion In sinations where & is not close to unity (1), we have to account for achivihes in our calcunrisele,

-weg V : 0.51(1) V6173 -0.1005 7 +(3-3)(161-73)(-25) los V₂ = 0.51(1)²V6173 20.463 +(3.3) (061-53)(0-45) Achiring coefficientol = 0.49 17 12:10 -0.463 - 0.844 Activity ai=nu8i = 0.25*0.19 0.1975 Ag = 2 2 0.344x0.75 -0.258