Match the following aqueous solutions with theappropriate letter from the column

Question

Match the following aqueous solutions with theappropriate letter from the column on the right.

1. 0.23 m MnSO4 ---- A. Highest boiling point 2. 0.26 m AgCH3COO ---- B. Second highest boiling point 3. 0.25 m KNO3 ---- C. Third highest boiling point 4. 0.43 m Ethylene glycol (nonelectrolyte) ---- D. Lowest boiling point
I would appreciate it if someone could explain to me how you candetermine the order. Thanks! Match the following aqueous solutions with theappropriate letter from the column on the right.

1. 0.23 m MnSO4 ---- A. Highest boiling point 2. 0.26 m AgCH3COO ---- B. Second highest boiling point 3. 0.25 m KNO3 ---- C. Third highest boiling point 4. 0.43 m Ethylene glycol (nonelectrolyte) ---- D. Lowest boiling point 1. 0.23 m MnSO4 ---- A. Highest boiling point 2. 0.26 m AgCH3COO ---- B. Second highest boiling point 3. 0.25 m KNO3 ---- C. Third highest boiling point 4. 0.43 m Ethylene glycol (nonelectrolyte) ---- D. Lowest boiling point

Explanation / Answer

=> highest boiling point => greatest molality ofions       boiling point elevation =Kb*molality of ions 1) Mn2+ and SO42-   so 0.23*2 = 0.46molal of ions 2) Ag+ and CH3COO-    so 0.26*2 = 0.52 molalof ions 3) 1 K+ and1NO3-          so0.25*2 = 0.50 molal of ions 4)   0.43 molal ethylene glucose, don't multiply b/cnonelectrolytes do not dissociate so highest to lowest:   AgCH3COO   , KNO3, MnSO4, ethylene glycol 1          C 2          A 3          B 4          D

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