Table 10.4 (data) B. Freezing-Point DepressionSodium Chloride SoluteEthylene Glycol SoluteMass of beaker + ice + water111.438 g 112.337 gFreezing point of pure wate58.650 g53.263 gMass of sample + container0 C0 CMass of empty container7.686 g33.185 gFreezing point of solution2.676 g 28.524 g Table 10.5 (report)Sodium Chloride SoluteEthylene Glycol SoluteTotal water mass Mass of solute Moles of solute ?t f Water mass in kg Solution molality K f Use Equation to complete table 10.5 from the attached picture. 1. The total mass of water in each sample equals the mass of ice plus themass of water added from the graduated cylinder. Determine this totalmass from data in Table 10.4. Record the total mass of the water samplein Table 10.52 Calculate and record the mass of the sodium chloride solute sampleused3. One mole of sodium chloride weighs 58.5 g. Use this value and thesodium chloride sample mass to calculate the number of moles ofsodium chloride in the sample (Equation 10.4). Record the result inTable 10.51 mol NaCI585g Naci(Eq. 10.4)moles NaCl mass NaCl x

Answered: 1. The total mass of water in each…

World of Chemistry, 3rd edition

3rd Edition

ISBN:9781133109655

Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste

Chapter15: Solutions

Section: Chapter Questions

Problem 55A

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Table 10.4 (data)
B. Freezing-Point Depression	Sodium Chloride Solute	Ethylene Glycol Solute
Mass of beaker + ice + water	111.438 g	112.337 g
Freezing point of pure wate	58.650 g	53.263 g
Mass of sample + container	0 C	0 C
Mass of empty container	7.686 g	33.185 g
Freezing point of solution	2.676 g	28.524 g

Table 10.5 (report)	Sodium Chloride Solute	Ethylene Glycol Solute
Total water mass
Mass of solute
Moles of solute
?t _f
Water mass in kg
Solution molality
K _f

Use Equation to complete table 10.5 from the attached picture.

1. The total mass of water in each sample equals the mass of ice plus the
mass of water added from the graduated cylinder. Determine this total
mass from data in Table 10.4. Record the total mass of the water sample
in Table 10.5
2 Calculate and record the mass of the sodium chloride solute sample
used
3. One mole of sodium chloride weighs 58.5 g. Use this value and the
sodium chloride sample mass to calculate the number of moles of
sodium chloride in the sample (Equation 10.4). Record the result in
Table 10.5
1 mol NaCI
585g Naci
(Eq. 10.4)
moles NaCl mass NaCl x

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