Step 2: If you assume 1 kg of solvent, then the number of moles of solute is equal to the molality. Convert 1 kg of water to moles. 1 kg H,O = mol H,O Calculate the mole fraction, x, of a solution with 2.40 mol of sucrose and 1 kg of water.
Step 2: If you assume 1 kg of solvent, then the number of moles of solute is equal to the molality. Convert 1 kg of water to moles. 1 kg H,O = mol H,O Calculate the mole fraction, x, of a solution with 2.40 mol of sucrose and 1 kg of water.
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...
Related questions
Question
Transcribed Image Text:Given that the vapor pressure of water is 17.54 torr at 20 °C, calculate the vapor-pressure lowering of aqueous solutions
that are 2.40 m in sucrose, C,,H,01 , and sodium chloride.
STRATEGY
1. Determine the colligative molality of each solution.
2. Convert each colligative molality to a mole fraction.
3. Apply Raoult's law.
Step 1: Sucrose is a nonelectrolyte, whereas NaCl has 2 ions per formula unit.
sucrose: 2.40 m
NaCl: 2(2.40 m) = 4.80 m
Step 2: If you assume 1 kg of solvent, then the number of moles of solute is equal to the molality. Convert 1 kg of water
to moles.
1 kg H,0 =
H,O
Calculate the mole fraction, x, of a solution with 2.40 mol of sucrose and 1 kg of water.
Xsucrose =
Calculate the mole fraction, x, of a solution with 4.80 mol of NaCl and 1 kg of water.
Question Source: MRG-General Chemistry
MacBook Air
000
D00 F4
F5
F7
F8
F9
F10
&
*
4
5
6
7
8
9
Expert Solution
Step 1
a) Moles of 1 kg water
1 kg = 1000 g
Moles of water = 55.56 mol
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
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.Recommended textbooks for you
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY