1. Calculate the freezing point of a solution made by dissolving 3.60 g of NaCl in 75.0 g of H2O. Kf of water is 1.86oC/m. Use the formula of NaCl to determine the van't Hoff factor. Answer with 2 decimal places.2. Calculate the boiling point of a solution made by dissolving 2.32 g of Na2SO4 in 79.2 g of H2O. Kb of water is 0.512oC/m. Use the formula of Na2SO4 to determine the van't Hoff factor. Answer with 1 decimal place.3. The real van't Hoff factor is typically not the theoretical based on chemical formula. Calculate the van't Hoff factor for MgCl2 if freezing point of an aqueous solution of MgCl2 is -3.07oC. The MgCl2 solution was prepared by mixing 5.90 g of MgCl2 with 98.6 g of H2O. The Kf for H2O is 1.86oC/mol. Answer to 2 decimal places.

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Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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1. Calculate the freezing point of a solution made by dissolving 3.60 g of NaCl in 75.0 g of H₂O. K_f of water is 1.86^oC/m. Use the formula of NaCl to determine the van't Hoff factor. Answer with 2 decimal places.

2. Calculate the boiling point of a solution made by dissolving 2.32 g of Na₂SO₄ in 79.2 g of H₂O. K_b of water is 0.512^oC/m. Use the formula of Na₂SO₄ to determine the van't Hoff factor. Answer with 1 decimal place.

3. The real van't Hoff factor is typically not the theoretical based on chemical formula. Calculate the van't Hoff factor for MgCl₂ if freezing point of an aqueous solution of MgCl₂ is -3.07^oC. The MgCl₂ solution was prepared by mixing 5.90 g of MgCl₂ with 98.6 g of H₂O. The K_f for H₂O is 1.86^oC/mol. Answer to 2 decimal places.

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