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At what temperature would a 1.80 m NaCl solution freeze, given that the van't Hoff factor for NaCl is 1.9? Kf for water is 1.86 degrees C/m. answer in degrees C

A 0.050 M solution of AlCl3 had an observed osmotic pressure of 3.85 atm at 20 degrees C. Calculate the van't Hoff factor i for AlCl3.

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