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9 November, 13:38

For which of the following aqueous solutions would one expect to have the largest van't Hoff factor (i) ? a. 0.050 m NaCl b. 0.500 m K2SO4 c. 0.050 m K2SO4 d. 0.500 m NaCl e. 0.500 m C6H12O6 (glucose)

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  1. 9 November, 13:45
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    The van't hoff factor of 0.500m K₂SO₄ will be highest.

    Explanation:

    Van't Hoff factor was introduced for better understanding of colligative property of a solution.

    By definition it is the ratio of actual number of particles or ions or associated molecules formed when a solute is dissolved to the number of particles expected from the mass dissolved.

    a) For NaCl the van't Hoff factor is 2

    b) For K₂SO₄ the van't Hoff factor is 3 [it will dissociate to give three ions one sulfate ion and two potassium ions]

    Out of 0.500m and 0.050m K₂SO₄, the van't hoff factor of 0.500m K₂SO₄ will be more.

    c) The van't Hoff factor for glucose is one as it is a non electrolyte and will not dissociate.
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