Concept explainers
A student dissolves
Aniline is used in the polyurethane manufacturing process.
Materials made from polyurethane include foams (as pictured), spandex, hardwood floor coatings, dolly wheels, and many other end products.
Interpretation:
The freezing and boiling temperature of solution on dissolving aniline in water is to be stated.
Concept introduction:
Freezing temperature of any liquid is the temperature at which vapor pressure of solid becomes equal to the vapor pressure of liquid. Addition of a solute into any other solution decreases the freezing point of solution. Boiling point is the temperature at which vapor pressure of liquid is equal to atmospheric pressure.
Answer to Problem 119E
Freezing temperature when aniline is dissolved in
Boiling temperature of solution when aniline is dissolved in
Explanation of Solution
The equation used to calculate freezing temperature of the solution is stated below.
Where,
•
•
•
•
•
The formula used to calculate the molality is stated below.
The given value of mass of aniline is
The molar mass of aniline is
The given mass of water is
Substitute the value of mass of aniline, mass of water and molar mass of aniline in equation (3) as shown below.
Calculation of freezing temperature is shown below.
The given value of
Substitute the value of
Given value of
Substitute the value of
Therefore, the
Therefore, freezing temperature of the solution is
The equation used to calculate boiling temperature of the solution is stated below.
Where,
•
•
•
•
•
Calculation of boiling temperature is shown below.
The given value of
Calculated value of
Substitute the value of
Given value of
Substitute the value of
Therefore, the
Therefore, boiling temperature of the solution is
Freezing and boiling temperature of the solution is
Want to see more full solutions like this?
Chapter 16 Solutions
Introductory Chemistry: An Active Learning Approach
- In a mountainous location, the boiling point of pure water is found to be 95C. How many grams of sodium chloride must be added to 1 kg of water to bring the boiling point back to 100C? Assume that i = 2.arrow_forwardSamples of each of the substances listed below are dissolved in 125 g of water. Which of the solutions has the highest boiling point? (a) 3.0 g sucrose, C12H22O11 (b) 1.0 g glycerol, C3H3(OH)3 (c) 1.0 g propylene glycol, C3H6(OH)2 (d) 2.0 g glucose, C6H12(OH)2arrow_forwardAn aluminum-containing compound has the empirical formula (C2HS)2AIF. Find the molecular formula if 0.448 g of the compound dissolved in 23.46 g of benzene has a freezing point of 5.265 C.arrow_forward
- The solubility of lead nitrate at 100C is 140.0 g/100 g water. A solution at 100C consists of 57.0 g of lead nitrate in 64.0 g of water. When the solution is cooled 10C to 25.0 g of lead nitrate crystallize out. What is the solubility of lead nitrate in g/100 g water at 10C?arrow_forwardThe dispersed phase of a certain colloidal dispersion consists of spheres of diameter 1.0 102 nm. (a) What are the volume (V=43r2) and surface area (A = r2) of each sphere? (b) How many spheres are required to give a total volume of 1.0 cm3? What is the total surface area of these spheres in square meters?arrow_forwardTwo samples of sodium chloride solutions are brought to a boil on a stove. One of the solutions boils at 100.10C and the other at 100.15C. a Which of the solutions is more concentrated? b Which of the solutions would have a lower freezing point? c If you split the solution that boils at 100.1C into two portions, how would the boiling points of the samples compare? Which of the following statements do you agree with regarding the determination of your answer for part c? I. The question cannot be answered with certainty without knowing the volumes of each portion. II. Making the necessary assumption that the two samples have equal volumes, I was able to correctly answer the question. III. The volumes that the sample was split into are irrelevant when determining the correct answer.arrow_forward
- Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning
- Chemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage LearningGeneral Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning