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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Question
How do I find the freezing point depression?
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Lab Data
SUBMIT
Molar mass (g/mol)
58.44
58.44
58.44
Mass of calorimeter (g)
17.22
PHASE 5:
Volume of DI water (mL)
47.1
Measure freezing-point of
solution 1
Mass of sodium chloride (g)
1.97
Complete the following steps:
Moles of sodium chloride (mol)
0.0337
sink and decant solution
Mass of calorimeter + solution (g)
66.51
Weigh calorimeter and
remaining ice on balance.
Record mass in Lab Data
7
Mass of calorimeter + solution + ice (g)
110.84
Freezing-point of solution (°C)
-1.63
Wash/Waste
Mass of calorimeter + ice after decanting (g)
39.88
Place used calorimeter in
Mass of ice added (g)
44.33
Wash/Waste bin
Mass of ice remaining after decanting (g)
22.66
Calculate following and record
in Lab Data
Mass of melted ice (g)
0.00 g
21.67
• Mass of ice added
• Mass of ice remaining
• Mass of melted ice
• Mass of water in solution (in
TARE
Mass of water in final solution (g)
68.99
Mass of water in final solution (kg)
0.06899
Molality of solution (m)
0.489
grams and kilograms)
• Molality
• Freezing-point depression
Freezing-point depression (°C)
van't Hoff factor
DATA
SHOW LABELS
GO TO PHASЕ 6
How to calculate van't Hoff factor
PHASES
10:45 PM
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2/8/2021
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