Answers and solutions may be handwritten or typed. SOLUTIONS AND COLLIGATIVE PROPERTIES5. What are the mole fractions of ethanol, CzHsOH, and water in a solution prepared by mixing75.0 g of ethanol with 25.0 g of water?6. What mass of naphthalene, CioHa, should be dissolved in 375 g of nitrobenzene, CeHsNO2,to produce a solution that boils at 214.20°C?Boiling point of pure nitrobenzene: 210.88°CKe (boiling pt elevation constant) of nitrobenzene: 5.24°C/m7. Lemon juice is a complex solution that does not freeze in a home freezer at temperatures aslow as -11°C. At what temperature will the lemon juice freeze if its effective molality isequivalent of 10.0 m glucose solution?Boiling point of pure water: 0°CKI (freezing pt elevation constant) of water: 1.86 C/m

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5. What are the mole fractions of ethanol, C2H5OH, and water in a solution prepared by mixing 75.0 g of ethanol with 25.0 g of water?

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter10: Properties Of Solutions

Section: Chapter Questions

Problem 7RQ

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Concept explainers

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.

Question

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SOLUTIONS AND COLLIGATIVE PROPERTIES
5. What are the mole fractions of ethanol, CzHsOH, and water in a solution prepared by mixing
75.0 g of ethanol with 25.0 g of water?
6. What mass of naphthalene, CioHa, should be dissolved in 375 g of nitrobenzene, CeHsNO2,
to produce a solution that boils at 214.20°C?
Boiling point of pure nitrobenzene: 210.88°C
Ke (boiling pt elevation constant) of nitrobenzene: 5.24°C/m
7. Lemon juice is a complex solution that does not freeze in a home freezer at temperatures as
low as -11°C. At what temperature will the lemon juice freeze if its effective molality is
equivalent of 10.0 m glucose solution?
Boiling point of pure water: 0°C
KI (freezing pt elevation constant) of water: 1.86 C/m

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