EXERCISE 12.15-FREEZING POINTS OF SOLUTIONS OF ELECTROLYTESCalculate the freezing point of 525 g of water that contains 25.0 g of NaCl dissolved in äAssume that the van't Hoff factor (i) is 1.85.In solutions of electrolytesATf = Kf X m xi%3DAT,(measured)AT:(calculated)and AT:(calculated) is the freezing point depression predictedwhere i =%3Dfor a non-electrolyte solute. The van't Hoff factor i takes into account ionization ofthe solute and that the activity (or effective concentration) of the solute is differentfrom the labelled concentration.

The formula for freezing point depression is: Where, ΔTf denotes freezing point depression, i…

Answered: EXERCISE 12.15-FREEZING POINTS OF…

EXERCISE 12.15-FREEZING POINTS OF SOLUTIONS OF ELECTROLYTES Calculate the freezing point of 525 g of water that contains 25.0 g of NaCl dissolved in Assume that the van't Hoff factor (i) is 1.85.

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...

See similar textbooks

Related questions

Q: Data and Report REPORT Table view Table 4. Enthalpy of solution of salts data and calculations…

A: Given that : The mass of NH4NO3 salt = 2.005 g The total mass of NH4NO3 solution = 52.11 g…

Q: trial #a It was 64.8 Determine the molality of each unknown solution, using Kr = 4.50 °C/m for…

A: As per Bartleby guidelines, I am allowed to answer one question at a time. Please re upload the…

Q: PRACTICE EXAMPLE B: A 10.00% aqueous solution of sucrose, C12H22O11, by mass, has a density of 1.040…

Q: Experiment name: Effect of the ionic strength on solubility of benzoic acid in water. Q1) Discusion…

A: Discussion: Benzoic acid, one of the most common aromatic acids, has a very low solubility in water.…

Q: 1. What type of intermolecular force will act in the following substances/solution? Justify your…

Q: A solution contains 3.50 g of a nonvolatile pure hydrocarbon in 95 g acetone. The boiling points of…

A: Here we need to calculate the molar mass of the given hydrocarbon.Hydrocarbon: These are the…

Q: Please help

A: Since the solvent is water and the freezing point water is 10.45 0C less than 0 (i.e normal freezing…

Q: Calculate the molality of a solution containing 231g of glucose (C6H1206) in 1293 g of ethanol.…

A: Given values are, Mass of glucose = 231 g Mass of solvent= 1293 g=1.293 kg Standard value, Molar…

Q: Attempt 3 temperature change of solution: -4.12 °C J Then, calculate the amount of heat gained or…

A: Given., The solution is 70 g of water and 5 g of sodium nitrate. The temperature change is -4.12…

Q: What volume of 1 N CaCO; solution contains 179.2 grams of CaCO,? Answer:

A: Given, Normality of CaCO3 solution = 1 N Mass of CaCO3 = 179.2 g Volume of CaCO3 solution = ? Note:…

Q: [Template] Molarity & Molality Practice 10. What volume (in ml) of 18.0M H,SO, is needed to contain…

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as…

Q: 100 80 60 40 20 10 30 40 50 60 70 80 Temperature (°C) Creative Commons license. Wikipedia.…

A: This curve is solubility curve. this curve represent change in solubility by changing temperature .…

Q: Practice Problems: B. Calculate the molality of a water solution if the freezing point is: A.…

A: Given, 4. 600g of C3H7OH dissolved in 600 g of H2O the molality, freezing point and boiling point…

Q: The vapor pressure of ethanol is 54.68 mm Hg at 25oC. How many grams of testosterone, C19H2802, a…

A: Given : Vapour pressure of ethanol P°= 54.68 mm Hg Vapour pressure of lowered P= 53.64…

Q: A solution prepared from 7.5 g of an unknown nonvolatile solute and 750 g of C6H6 has a boiling…

A: Given : Mass of unknown solute = 7.5 g Mass of C6H6 = 750 g Convert g into kg as follows. 1 g =…

Q: ENGAGEMENT A. Directions: Write TRUE if the statement is correct and write FALSE if the statement is…

A: We have to tell which statements are true

Q: What would be the theoretical freezing point of a solution made by dissolving 3.313 g of KCl in…

A: Given : mass of KCl i.e solute = 3.313 g And mass of water i.e solvent = 135.0 g = 0.135 Kg…

Q: Part II. Problem Solving (20 pts) Instruction: Solve the colligative property questions. Refer below…

A: Colligative property are those property which depends on amount of solute instead of quality of the…

Q: Calculate the molality of a solution containing 137g of glucose (C6H1206) in 2061 g of ethanol.…

A: Given , a solution contains 137 g of glucose ( C6H12O6) in 2061 g of ethanol.we are asked to…

Q: What mass of water will contain 106 g of sucrose (C12H22011) to make a 0.57 m solution? Answer:

A: Given that: Mass of sucrose = 106 g Molality = 0.57 m Mass of water = ?

Q: What is the concentration of magnesium bromide, in ppm, if 152.51 g MgBr, is dissolved in 7.6 L…

A: Given: The mass of MgBr2 dissolved = 152.51 g The volume of the solution = 7.6 L We have to…

Q: Determine which will lower the freezing point of water more: 225.0 g of KCl or 225.0 g of Na2SO4?…

A: We know that., Change in freezing point = freezing point of pure solvent - Freezing point of…

Q: A mixture of ethanol (C2H5OH) and water has a freezing point of -16° C. (a) what is the molality of…

Q: Calculate the molality of a solution containing 250g of glucose (C6H1206) in 1045 g of ethanol.…

A: Given, Mass of glucose (C6H12O6) = 250 g Mass of ethanol = 1045 g = 1.045 Kg Molality of the…

Q: Multiple Choice: Consider a saturated ideal solution. Why does more solute dissolve with increasing…

A: Chemical potential is energy of species that can be absorbed or released due to change of the…

Q: Polling Question – Which of the following hydrocarbons produces a boiling point elevation of 0.0494…

Q: What mass of glucose (C6H,1206) must dissolve in 2061 g of ethanol to make a 0.62 m solution?…

A: Molality: It is defined as number of moles of solute dissolved in 1 kg of solvent. Molality =Number…

Q: What is the freezing point (in degrees Celcius) of 4.38 kg of water if it contains 586.4 g of…

A: Given that, Mass of water, Ww = 4.38 Kg Mass of butanol, WB = 586.4 g Molar mass of butanol Mw =…

Q: Match the following aqueous solutions with the appropriate letter from the column on the right.…

A: to arrange the given solutions, first we have to calculate depression in freezing point

Q: 2 attempts left Check my work Be sure to answer all parts. A solution contains 0.200 mol of NaCl…

A: Given that: Moles of sodium chloride in solution = 0.200 mol Moles of water in solution = 6.74 mol…

Q: A 100 80 60 40 20 D 10 20 30 40 50 60 70 80 Temperature (°C) Creative Commons license. Wikipedia.…

Q: Calculate the freezing point of a solution of 367.4 g of ethylene glycol (C2H6O2, 62.067 g/mol)…

Q: 1. A balloon is filled with 100.0 L of air at 1.300 atm pressure. What pressure is needed to change…

A: According to Charles law, at constant pressure, volume is directly proportional to temperature.…

Q: Solubility Graph 250 240 230 220 210 200 potassium iodide 190 potassium nitrate 180 170 m 160 150 8…

A: Solubility graph shows the effect of temperature on solubility of a salt in 100g water.

Q: What mass of glycerin (C3 HsO3), a nonelectrolyte, must be dissolved in 200.0 g water to give a…

A: Here we need to calculate the mass of the glycerin which must be dissolved in 200.0 g of water to…

Q: Question 1 <. A solution contains 21.65 grams of NaCl in 0.153 kg water at 25 °C. What is the vapor…

Q: I0rints) Determine the mass of magnesium chloride (MM=95.21 g) that must be dissolved in water to…

A: Delta Tb = Kb . m Where m = molality; Kb = 0.512·c/m Delta Tb = boiling point

Q: An aqueous solution containing glucose has a vapor pressure of 18.6 torr at 25°C. What would be the…

A: Let P0 be the vapor pressure of the pure solvent and p be the vapor pressure of solution.i be the…

Q: 1.52 g of some unknown compound reduces the freezing point of 68.00 g of a solvent from 9.50 to 8.75…

A: Addition of non-volatile substance in a volatile pure solvent decreases the vapour pressure of the…

Q: tert-Butyl alcohol is a solvent with a K; of 9.10 °C/m and a freezing point of 25.5 °C. When 0.807 g…

Q: Select all that are True. At 10 degC is 20 g of sodium nitrate is placed into 100 g of water, an…

Q: Match the following aqueous solutions with the appropriate letter from the column on the right.…

Q: Calculate the mass in grams of H2S gas that can be dissolved in 900 mL of water at 25 c and H2S…

A: The Henry’s Law states that the mass of a gas dissolved by a solvent is directly related to the…

Q: A 100 80 60 40 10 20 30 40 50 60 70 80 Temperature (°C) Creative Commons license. Wikipedia.…

Q: A solution at 30°C contains 500 g of water and 59.0 g of sodium carbonate. The vapour pressure of…

A: Interpretation - To determine the vapor pressure of water over the solution when a solution at 30°C…

Q: Situation: 0.9% (w/v) sodium chloride (MW = 58.44 g/mol) solution (Normal Saline Solution) has an…

Q: 9:00 E PROBLEM SOLVING MT UA REME... 3 of 3 An aqueous solution of hydrogen peroxide H2O2 with a…

Q: The molality of hydrochloric acid, HCl, in an aqueous solution is 13.6mol/kg. What is the mole…

A: Molality is the way to express the concentration of any solution. It can be defined as the number of…

Q: Match the following aqueous solutions with the appropriate letter from the column on the right.…

A: -> When non volatile solute are dissolved in solution then boiling point of solvent increases.…

Q: What volume of 0.73 M NaCl solution contains 145.9 grams of NaCI? Answer:

A: Given : Molarity of NaCl = 0.73 M Mass of NaCl = 145.9 gm Molarity is defined as number of moles…

Question

EXERCISE 12.15-FREEZING POINTS OF SOLUTIONS OF ELECTROLYTES
Calculate the freezing point of 525 g of water that contains 25.0 g of NaCl dissolved in ä
Assume that the van't Hoff factor (i) is 1.85.
In solutions of electrolytes
ATf = Kf X m xi
%3D
AT,(measured)
AT:(calculated)
and AT:(calculated) is the freezing point depression predicted
where i =
%3D
for a non-electrolyte solute. The van't Hoff factor i takes into account ionization of
the solute and that the activity (or effective concentration) of the solute is different
from the labelled concentration.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step by step

Solved in 4 steps with 5 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

An aqueous solution made by dissolving 169 mg of an unkown compound (a nonelectrolyte) in enough water to make 510.8 mL of solution, develops an osmotic pressure of 5.26 torr at a temperature of 21.1 °C. What is the molecular mass (g/mol) of this unknown compound? Report answer two places past decimal point.
The molality of hydrochloric acid, HCl, in an aqueous solution is 13.6mol/kg. What is the mole fraction of hydrochloric acid in the solution? Answer: ______
c An aqueous KBr solution has a mole fraction, X, equal to 0.286. What is the molality of this solution? Express your answer to three significant figures. m = Answer m
A solution at 30°C contains 500 g of water and 59.0 g of sodium carbonate. The vapour pressure of pure water at this temperature is 0.0420 atm. What is the vapour pressure of water over the solution? Express your answer to three significant figures. p = Answer atm
5.Calculate the mole fraction of WATER in a solution of 45.0 grams of dextrose (molar mass = 180.158 g/mol) in 150.0 grams of water (molar mass = 18.0159 g/mol). Group of answer choices no correct answer 0.231 0.0291 0.972 0.769
The normal freezing point of ethanol (CH3CH2OH) is -117.30 °C and its Kfpvalue is 1.99 °C/m. A nonvolatile, nonelectrolyte that dissolves in ethanol is testosterone . How many grams of testosterone, C19H28O2 (288.4 g/mol), must be dissolved in 267.0 grams of ethanol to reduce the freezing point by 0.300 °C?Answer: ______g testosterone.
The freezing point of pure water is 0.0°C. How many grams of ethylene glycol (C2H6O2) must be mixed in 100.0 g of water to lower the freezing point of the solution to -4.3°C? (___ANSWER___) g
The vapor pressure of ethanol (CH3CH2OH) is 54.7 mm Hg at 25 °C. What is the vapor pressure of a solution consisting of 231 g of ethanol and 0.190mol of a nonvolatile nonelectrolyte? Answer:VP(solution) = _____mm Hg
5. ) A solution was in a prepared by dissolving 5.46 g of para-dichlorobenzene (C6H4Cl2) in 50.0 mL benzene (density of benzene = 0.879 g/mL). What is the molality of this solution? Follow this format: Given: Required: Equation: Solution: Answer:
Multiple Choice: Consider a saturated ideal solution. Why does more solute dissolve with increasing temperature? a. The solubility of the solute increases because the chemical potential of the solution increases with increasing temperature b. The solubility of the solute increases because the vapor pressure of the mixture increases with increasing temperature c. The solubility of the solute increases because the chemical potential of the solution decreases with increasing temperature d. The solubility of the solute increases because the free energy of the solution increases with increasing temperature
Suppose that you add 20.9 g of an unknown molecular compound to 0.250 kg of benzene, which has a Kf of 5.12 oC/m. With the added solute, you find that there is a freezing point depression of 3.12 oC compared to pure benzene. What is the molar mass of the unknown compound? Type answer:
H2. A solution contains 100.0 g water, 10.0 g NaCI, and 15.0 g methanol. What is the weight percentage of methanol in the solution? Please give typed answer