3. Calculate the boiling point of a solution made from 227 g of MgCl2 dissolved in 700. g of water. What is the boiling point of the solution? Kb = 0.512°C/m.
3. Calculate the boiling point of a solution made from 227 g of MgCl2 dissolved in 700. g of water. What is the boiling point of the solution? Kb = 0.512°C/m.
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...
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Transcribed Image Text:CHEM 103 Homework 12
17.5-PS
PS
Solutions & Colligative Properties
1. The vapor pressure of water at 20°C is 17.5 torr. What is the vapor pressure of water over a
solution containing 300. g C6H12O6 and 455 g of water at 20°C? Po-Ps
wxM
MX W
Ps
300x10
100 x 455
PS=
17.5
1.0659
= 16.4 Torr
17.5-1
PS
17.5
= 0.0659
Name
Lab Section
= 0.0659 +1
16.4 Torr
2. Calculate the freezing point of a solution made from 32.7 g of propane, C3H8, dissolved in
137.0 g of benzene, C6H6. The freezing point of benzene is 5.50°C and its K+ is 5.12°C/m.
3. Calculate the boiling point of a solution made from 227 g of MgCl2 dissolved in 700. g of
water. What is the boiling point of the solution? Kb = 0.512°C/m.
4. Calculate the concentration of nitrogen gas in a 1.00 L container exerting a partial pressure of
572 mm Hg at room temperature. Henry's law constant for nitrogen at 25°C is 6.8 x 10-4
mol/L atm. (Solve using the information given and factor labelling)
2023
Professor Teresa
Butterfield
W
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