Explanation Given: Mass Percentage of NaCl in solution = 5% Formula used: number of moles = mass molar mass molarity = moles of solute mass of solvent in kg mole fraction = moles of solute total moles of solution Calculation: 5% by mass in aqueous solution, it means 5 g of NaCl in 100 g of solution. Therefore, mass of water (solvent) = 100g-5g = 95 g Now, to calculate molality, we must know the moles of NaCl in solution as molarity = moles of solute mass

Selected Solutions Manual for Chemistry: Structure and Properties

2nd Edition

ISBN: 9780134460673

Author: Nivaldo J. Tro, Kathy Thrush-Shaginaw, Mary Beth Kramer

Publisher: PEARSON

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Chapter 13, Problem 64E

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To determine:

The molality and the mole fraction of an aqueous solution.

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Chapter 13, Problem 63E

Chapter 13, Problem 65E

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Chapter 13 Solutions

Selected Solutions Manual for Chemistry: Structure and Properties

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The molality and the mole fraction of an aqueous solution.

Solution Summary: The author explains the formula used to determine the molality and mole tion of an aqueous solution.

To determine: The molality and the mole fraction of an aqueous solution.

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Chapter 13 Solutions

To determine:

The molality and the mole fraction of an aqueous solution.