Answered: 7. You have an aqueous solution of NaCl…

Chemistry & Chemical Reactivity

9th Edition

ISBN:9781133949640

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter13: Solutions And Their Behavior

Section: Chapter Questions

Problem 104SCQ: Sodium chloride (NaCl) is commonly used to melt ice on roads during the winter. Calcium chloride...

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7. You have an aqueous solution of NaCl that has a freezing point of -4.65°C. What mass (in grams) of NaCl must be added to 1000 g of this solution to lower the freezing point to -12.00°C? (Assume a van't Hoff factor of 1.9 for NaCl). (Kf for water is 1.86°C･kg/mol) in grams .

8. You dissolve a 30.0 g mixture of glucose (C₆H₁₂O₆) and NaCl in 1.00 kg water. The freezing point of this solution is found to be -0.531°C. Assuming ideal behavior, what is the mass (in grams) of glucose in the mixture? (Kf for water is 1.86°C･kg/mol) in grams .

10.

Based only on their intermolecular forces, which of the following pairs of molecules would be most soluble in one another?

A) CH₃CH₂CH₂CH₂NH₂ and CH₃CH₂CH₂CH₂OH

B) CH₃CH₂OCH₃CH₂ and CH₃CH₂CH₂CH₂CH₂CH₃

C) CH₃CH₂CH₂CH₂CH₃ and CH₃CH₂OH

D) CH₃CH₂CH₂CH₂CH₃ and CH₃CH₂CH₂NH₂

11. The Henry's law constant at 25.0 °C for O₂ in water is 0.0013 M/atm. What is the solubility of O₂, in molarity units, in 1.0 L of water when the partial pressure of O₂ is 2.2 atm? in M

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