Abuela asked Mirabel to perform an experiment on freezing point depression. The solution was prepared by dissolving 2.25 g of salt in 20.00 mL distilled water (density = 0.997 g mL1; Tf = 0 °C; kf = 1.86 °C m1). Mirabel determined the freezing point of the solution to be -3.48 °C. She later found out that the salt she used was sodium chloride that was contaminated with potassium chloride. 1. Calculate ATt for the experiment. 2. Calculate the molality of the solution. 3. Calculate the mass of potassium nitrate present in the salt sample.
Abuela asked Mirabel to perform an experiment on freezing point depression. The solution was prepared by dissolving 2.25 g of salt in 20.00 mL distilled water (density = 0.997 g mL1; Tf = 0 °C; kf = 1.86 °C m1). Mirabel determined the freezing point of the solution to be -3.48 °C. She later found out that the salt she used was sodium chloride that was contaminated with potassium chloride. 1. Calculate ATt for the experiment. 2. Calculate the molality of the solution. 3. Calculate the mass of potassium nitrate present in the salt sample.
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter13: The Chemistry Of Solutes And Solutions
Section: Chapter Questions
Problem 77QRT
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