Colligative properties Problems.pdf -. School Leonia High. Course Title CHEMISTRY II. Uploaded By ProfessorCrownOctopus13. Pages 2. This preview shows page 1 - 2 out of 2 pages. 1. The normal freezing point of water is 0.00 ˚C and it's freezing point depression constant is 1.86 ˚C/m. If we make up a 1.00 molal solution of Na2SO4, what is the freezing point of the mixture. 2. For a 0.222 m aqueous solution of sucrose, C12H22O11, What is the boiling point? kb = 0.512˚C/m 3. 13. Colligative properties of electrolyte solutions ∆Tbp = iKbm and ∆Tfp = iKfm where "i" is called the van't Hoff factor. i = 1 for non-electrolytes n > i > 1 for weak electrolytes i = n for strong electrolytes As a solution is made more dilute, the value of "i" for strong electrolytes approaches "n" (the Problem : A solution of 0.5 g of an unknown nonvolatile, nonelectrolyte solute is added to 100 mL of water and then placed across a semipermeable membrane from a volume of pure water. When the system reaches equilibrium, the solution compartment is elevated 5.6 cm above the solvent compartment. Key Worksheet 5: Colligative Properties Objectives: To understand and be able to apply the following colligative properties. Freezing Point Depression: When a solute is added to a solvent, the freezing point (same as the melting point) of the solvent is lowered. We can calculate this using the equation: DTF = imKF Name:_____ Revised CR 12/10/13 © LaBrake & Vanden Bout 2013 Department of Chemistry University of Texas at Austin Colligative*Properties*-*Supplemental*Worksheet* Colligative properties practice problems worksheet Name: You should try to answer questions without accessing the Internet. When a non-volatile solute is dissolved in a volatile solvent, the boiling point increases and the freezing point decreases (as if the solute prevents the solvent from entering the steam phase!) Osmotic pressure is a colligative property that can be used to determine the molar mass of an unknown substance. The osmotic pressure is determined by measuring the height of the column of solution and converting this value to mm of Hg (1 mm Hg = 1 torr, 760 torr = 1 atm). Using, Π V solution = n solute R T (where Π is the osmotic pressure, R Title: Solution and Colligative Properties Worksheet Answer Keys Author: Shimazu, Cheryl Subject: Solution and Colligative Properties Worksheet Answer Keys View Comp Colligative Properties Practice Problems.pdf from SCIENCE Chemistry at Lakota East High School. Colligative Properties Worksheet Name _ Date _ Period _ Part 1 - Multiplier Acces PDF Colligative Properties Practice Problems With Answers (Textbook + Exemplar) Class 12 Chemistry Book (For 2022 Exam) SAT Subject Test Chemistry Cracking the MCAT, 2013-2014 Edition Cracking the MCAT Barron's SAT Subject Test: Chemistry with Page 9/23. Acces PDF Colligative Properties Practice Problems With Answers Online Tests Recall that colligative properties depend only upon solute concentration. The unit molality and mole fractions are two additional ways in which chemists express the concentration of a solution. The unit molality (m)is the number of moles of solute dissolved in 1 kilogram (1000 g) of solvent. Molality is also known as molal concentration. Recall that colligative properties depend only upon solute concentration. The unit molality and mole fractions are two additional ways in which chemists express the concentration of a solution. The