Suppose Water Forms A Regular Solution With A Solute Which We Designate With A 2 Suppose The Mole Raction Of Water In 1 (59.33 KiB) Viewed 31 times
Suppose Water Forms A Regular Solution With A Solute Which We Designate With A 2 Suppose The Mole Raction Of Water In 2 (29.62 KiB) Viewed 31 times
Suppose water forms a regular solution with a solute, which we designate with a 2 . Suppose the mole raction of water in this solution is X1=0.75. Suppose the vapor pressure of water above this solution is P1=2029 Pa. Assume T=293 K and the vapor pressure of pure water at T=293 KP1∗=2536 Pa. Part A Calculate the activity coefficient of water γ1 in this solution. Part B Determine the exchange parameter w for the regular solution described above. Part C For the regular solution described in parts A and B, calculate the osmotic pressure that it generates at T=293 K. Assume for water Vˉ1=1.80×10−5 m3/mol Part D The exchange parameter w was defined for a regular solution: w=Z(2ε12−ε11−ε22)/2RT. Using your value for w at 293K determined in part B, determine w at T=273 K. Assume Z=6. Assume 2ε12−ε11−ε22 is independent of temperature.
Suppose a solution is prepared where x2=0.050. Assume the solution is regular, Use the exchange parameter w calculated in part D to determine the freezing point lowering ΔT. Assume ΔHˉf usion =6010 J/mol. Assume w is constant over the range ΔT. Part F Repeat the calculation in Part E, only do so for an ideal solution.
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