The freezing point of an aqueous 0.050 m CaCl₂ solution is -0.27 °C. What is the van’t Hoff factor (i) for CaCl₂ at this concentration? How does it compare to the expected value of i?

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SORT You are given the molality of a solution and its freezing point. You are asked to find the value of i, the van't Hoff factor, and compare it to the expected value. STRATEGIZE To solve this problem, use the freezing point depres- sion equation including the van't Hoff factor. GIVEN: 0.050 m CaCl₂ solution, AT = 0.27 °C FIND: i CONCEPTUAL PLAN AT₁ = im x Kf