Explanation Given information: (a) Acetone concentration by mass = 0.100% (b)Molarity of acetone = 0.100M (c)Molality of acetone = 0.100m (d) X a c e t o n e = 0.100 Temperature = 25 0 C. This has to do withRaoult’s law equation, P A = x A P A 0 . Where P A 0 is the vapor pressure of the pure solvent at a given temperature. x A is the molar fraction of solvent in the solution and P A is the partial pressureabove an ideal solution. Upon considering the data given in the question, temperature for all these 4 different concentrations are same. Since solute is also same in all 4 concentrations, partial pressure only depends on the molar fraction. Therefore calculating all 4 molar fractions of water in different acetone concentrations, Consider in 100.0g solution, the mass of acetone is 0.100g and 99.9g of water is present. Moles of acetone = 0.100 g × 1 m o l C H 3 C O C H 3 58.08 g = 0.00172 m o l Moles of water = 99 .9g × 1mol H 2 O 18.02 g = 5 .54 mol Therefore, total number of moles = moles of acetone + moles of water = 0.00172 m o l + 5.54 m o l = 5.5417 m o l Molar fraction of water in 0.100% CH 3 COCH 3 by mass, = 5.54 m o l 5.5417 m o l = 0.999 Considering the 0.100M acetone; 0.1mol of acetone containing one liter of solution. One liter = one kilogram, therefore in one kilogram of water acetone 0.1 mol contains. Mass of acetone = 0.1 m o l × 58.08 g m o l − 1 = 5

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Chapter 14, Problem 90IAE

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Interpretation:

Highest partial pressure of waterand lowest freezing point should be estimated among four aqueous acetone solutions.

Concept introduction:

Rault’s law; PA=xAPA0

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Chapter 14, Problem 89IAE

Chapter 14, Problem 91IAE

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Highest partial pressure of waterand lowest freezing point should be estimated among four aqueous acetone solutions. Concept introduction: Rault’s law; P A = x A P A 0

Solution Summary: The author explains Rault's law equation, where P_A is the vapor pressure of the pure solvent at a given temperature. Since solute is also same in all 4 concentrations, partial pressure

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Interpretation:

Highest partial pressure of waterand lowest freezing point should be estimated among four aqueous acetone solutions.

Concept introduction:

Rault’s law; PA=xAPA0

Want to see the full answer?

Chapter 14 Solutions

Highest partial pressure of waterand lowest freezing point should be estimated among four aqueous acetone solutions. Concept introduction: Rault’s law; P A = x A P A 0

Solution Summary: The author explains Rault's law equation, where P_A is the vapor pressure of the pure solvent at a given temperature. Since solute is also same in all 4 concentrations, partial pressure

Concept explainers

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Interpretation: Highest partial pressure of waterand lowest freezing point should be estimated among four aqueous acetone solutions. Concept introduction: Rault’s law; PA=xAPA0

Want to see the full answer?

Chapter 14 Solutions

Interpretation:

Highest partial pressure of waterand lowest freezing point should be estimated among four aqueous acetone solutions.

Concept introduction:

Rault’s law; PA=xAPA0