Chemistry: Atoms First V1
Chemistry: Atoms First V1
1st Edition
ISBN: 9781259383120
Author: Burdge
Publisher: McGraw Hill Custom
Question
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Chapter 13, Problem 13.24QP

(a)

Interpretation Introduction

Interpretation:

The molality and the molarity of ethanol (C2H5OH) solution and also the volume of solution containing 0.250mole ethanol (C2H5OH) has to be determined.

Concept introduction:

Molality (m): Molality is the number of moles of solute present in one kilogram of solvent.

Molality (m) =Numberofmolesofsolute1kgofsolvent

(a)

Expert Solution
Check Mark

Answer to Problem 13.24QP

The molality of ethanol (C2H5OH) solution is 3.83m

Explanation of Solution

The molality of ethanol (C2H5OH) solution is calculated.

Given,

Mass percent of ethanol in aqueous solution=0.15%Density of aqueous solution0.984g/mLMolecular mass of ethanol=46.07g

Massofethanolinthesolution=0.15×100=15gMassofwater=100g15g=85g=0.085kg

Number of moles=GivenmassMolecularmass=15g46.07g=0.3256mol

Therefore,

The molality of ethanol (C2H5OH) solution is,

Molality (m) =Numberofmolesofsolute1kgofsolvent=0.3256mol0.085kg=3.83m

The molality of ethanol (C2H5OH) solution is 3.83m

(b)

Interpretation Introduction

Interpretation:

The molality and the molarity of ethanol (C2H5OH) solution and also the volume of solution containing 0.250mole ethanol (C2H5OH) has to be determined.

Concept introduction:

Molarity (M): Molarity is number of moles of the solute present in the one liter of the solution.

Molarity (M) =Numberofmolesofsolute1literofsolution

(b)

Expert Solution
Check Mark

Answer to Problem 13.24QP

The molarity of ethanol (C2H5OH) solution is 3.20M

Explanation of Solution

The molarity of ethanol (C2H5OH) solution is calculated.

Given,

Mass percent of ethanol in aqueous solution=0.15%Density of aqueous solution0.984g/mLMolecular mass of ethanol=46.07g

To convert volume from gram

100g ×1mL0.984g = 101.6mL= 0.1016L

Massofethanolinthesolution=0.15×100=15gNumber of moles=GivenmassMolecularmass=15g46.07g=0.3256mol

Therefore,

The molarity of ethanol (C2H5OH) solution is,

Molarity (M) =Numberofmolesofsolute1literofsolution=0.3256mol0.1016L=3.20M

The molarity of ethanol (C2H5OH) solution is 3.20M

(c)

Interpretation Introduction

Interpretation:

The molality and the molarity of ethanol (C2H5OH) solution and also the volume of solution containing 0.250mole ethanol (C2H5OH) has to be determined.

Concept introduction:

Number of moles from its given mass is,

Number of moles=GivenmassMolecularmass

Equation for density is,

Density=MassVolume

(c)

Expert Solution
Check Mark

Answer to Problem 13.24QP

The volume of solution containing 0.250mole ethanol (C2H5OH) is 78.1mL

Explanation of Solution

The volume of solution containing 0.250mole ethanol (C2H5OH) is calculated.

Given,

Mass percent of ethanol in aqueous solution=0.15%Density of aqueous solution0.984g/mLMolecular mass of ethanol=46.07g

The molarity of ethanol (C2H5OH) solution is 3.20M which means 1L of the solution contains 3.20moles of ethanol.

Therefore,

The volume of solution containing 0.250mole ethanol (C2H5OH) is

The volume of solution=0.250mol×1L3.20mol =0.0781L=78.1mL

The volume of solution containing 0.250mole ethanol (C2H5OH) is 78.1mL

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Chapter 13 Solutions

Chemistry: Atoms First V1

Ch. 13.3 - Rubbing alcohol is a mixture of isopropyl alcohol...Ch. 13.3 - Prob. 3PPACh. 13.3 - Prob. 3PPBCh. 13.3 - Prob. 3PPCCh. 13.3 - Prob. 13.3.1SRCh. 13.3 - Prob. 13.3.2SRCh. 13.3 - Prob. 13.3.3SRCh. 13.3 - Prob. 13.3.4SRCh. 13.4 - Calculate the concentration of carbon dioxide in a...Ch. 13.4 - Calculate the concentration of CO2 in water at 25C...Ch. 13.4 - Prob. 4PPBCh. 13.4 - Prob. 4PPCCh. 13.4 - Prob. 13.4.1SRCh. 13.4 - Prob. 13.4.2SRCh. 13.5 - Prob. 13.5WECh. 13.5 - Calculate the vapor pressure of a solution made by...Ch. 13.5 - Calculate the mass of urea that should be...Ch. 13.5 - The diagrams [(i)(iv)] represent four closed...Ch. 13.5 - Ethylene glycol [CH2(OH)CH2(OH)] is a common...Ch. 13.5 - Prob. 6PPACh. 13.5 - What mass of ethylene glycol must be added to 1525...Ch. 13.5 - Prob. 6PPCCh. 13.5 - Prob. 13.7WECh. 13.5 - Prob. 7PPACh. 13.5 - Prob. 7PPBCh. 13.5 - Prob. 7PPCCh. 13.5 - Prob. 13.5.1SRCh. 13.5 - Prob. 13.5.2SRCh. 13.5 - Prob. 13.5.3SRCh. 13.5 - Prob. 13.5.4SRCh. 13.6 - Quinine was the first drug widely used to treat...Ch. 13.6 - Prob. 8PPACh. 13.6 - Prob. 8PPBCh. 13.6 - Prob. 8PPCCh. 13.6 - Prob. 13.9WECh. 13.6 - A solution made by dissolving 25 mg of insulin in...Ch. 13.6 - What mass of insulin must be dissolved in 50.0 mL...Ch. 13.6 - The first diagram represents one aqueous solution...Ch. 13.6 - Prob. 13.10WECh. 13.6 - An aqueous solution that is 0.0100 M in acetic...Ch. 13.6 - Prob. 10PPBCh. 13.6 - Prob. 10PPCCh. 13.6 - Prob. 13.6.1SRCh. 13.6 - Prob. 13.6.2SRCh. 13 - Prob. 13.1QPCh. 13 - Prob. 13.2QPCh. 13 - Prob. 13.3QPCh. 13 - Prob. 13.4QPCh. 13 - Prob. 13.5QPCh. 13 - Prob. 13.6QPCh. 13 - Explain why dissolving a solid almost always leads...Ch. 13 - Describe the factors that affect the solubility of...Ch. 13 - Prob. 13.9QPCh. 13 - Prob. 13.10QPCh. 13 - Arrange the following compounds in order of...Ch. 13 - Prob. 13.12QPCh. 13 - Prob. 13.13QPCh. 13 - Prob. 13.14QPCh. 13 - Prob. 13.15QPCh. 13 - Prob. 13.16QPCh. 13 - Prob. 13.17QPCh. 13 - Prob. 13.18QPCh. 13 - Prob. 13.19QPCh. 13 - Prob. 13.20QPCh. 13 - Prob. 13.21QPCh. 13 - Prob. 13.22QPCh. 13 - Prob. 13.23QPCh. 13 - Prob. 13.24QPCh. 13 - Fish breathe the dissolved air in water through...Ch. 13 - Prob. 13.26QPCh. 13 - Discuss the factors that influence the solubility...Ch. 13 - What is thermal pollution? Why is it harmful to...Ch. 13 - Prob. 13.29QPCh. 13 - A student is observing two beakers of water. One...Ch. 13 - A man bought a goldfish in a pet shop. Upon...Ch. 13 - A 3.20-g sample of a salt dissolves in 9.10 g of...Ch. 13 - The solubility of KNO3 is 155 g per 100 g of water...Ch. 13 - Prob. 13.34QPCh. 13 - The solubility of CO2 in water at 25C and 1 atm is...Ch. 13 - The solubility of N2 in blood at 37C and at a...Ch. 13 - The difference between water-soluble and...Ch. 13 - Predict whether each vitamin will be water soluble...Ch. 13 - Prob. 13.39QPCh. 13 - The first diagram represents an open system with...Ch. 13 - The diagrams represent an aqueous solution at two...Ch. 13 - Prob. 13.42QPCh. 13 - Prob. 13.43QPCh. 13 - Write the equation representing Raoults law, and...Ch. 13 - Prob. 13.45QPCh. 13 - Write the equations relating boiling-point...Ch. 13 - Prob. 13.47QPCh. 13 - Prob. 13.48QPCh. 13 - What is osmosis? What is a semipermeable membrane?Ch. 13 - Prob. 13.50QPCh. 13 - Prob. 13.51QPCh. 13 - Prob. 13.52QPCh. 13 - What are ion pairs? What effect does ion-pair...Ch. 13 - Prob. 13.54QPCh. 13 - Prob. 13.55QPCh. 13 - Prob. 13.56QPCh. 13 - Prob. 13.57QPCh. 13 - The vapor pressure of benzene is 100.0 mmHg at...Ch. 13 - The vapor pressures of ethanol (C2H5OH) and...Ch. 13 - The vapor pressure of ethanol (C2H5OH) at 20C is...Ch. 13 - Prob. 13.61QPCh. 13 - What arc the boiling point and freezing point of a...Ch. 13 - Prob. 13.63QPCh. 13 - How many liters of the antifreeze ethylene glycol...Ch. 13 - Prob. 13.65QPCh. 13 - Prob. 13.66QPCh. 13 - What are the normal freezing points and boiling...Ch. 13 - At 25C, the vapor pressure of pure water is 23.76...Ch. 13 - Both NaCl and CaCl2 are used to melt ice on roads...Ch. 13 - A 0.86 percent by mass solution of NaCl is called...Ch. 13 - Prob. 13.71QPCh. 13 - Calculate the osmotic pressure of a 0.0500 M MgSO4...Ch. 13 - The tallest trees known are the redwoods in...Ch. 13 - Calculate the difference in osmotic pressure (in...Ch. 13 - Prob. 13.75QPCh. 13 - Consider two aqueous solutions, one of sucrose...Ch. 13 - Arrange the following solutions in order of...Ch. 13 - Prob. 13.78QPCh. 13 - Indicate which compound in each of the following...Ch. 13 - Describe how you would use freezing-point...Ch. 13 - Prob. 13.81QPCh. 13 - The elemental analysis of an organic solid...Ch. 13 - A solution of 2.50 g of a compound having the...Ch. 13 - The molar mass of benzoic acid (C6H5COOH)...Ch. 13 - A solution containing 0.8330 g of a polymer of...Ch. 13 - Prob. 13.86QPCh. 13 - A solution of 6.S5 g of a carbohydrate m 100.0 g...Ch. 13 - A 0.036-M aqueous nitrous acid (HNO2) solution has...Ch. 13 - Prob. 13.89QPCh. 13 - Prob. 13.90QPCh. 13 - Prob. 13.91QPCh. 13 - Prob. 13.92QPCh. 13 - Prob. 13.93QPCh. 13 - Lysozyme is an enzyme that cleaves bacterial cell...Ch. 13 - The blood sugar (glucose) level of a diabetic...Ch. 13 - Trees in cold climates may be subjected to...Ch. 13 - Prob. 13.97QPCh. 13 - Two liquids A and B have vapor pressures of 76 and...Ch. 13 - Determine the van't Hoff factor of Na3PO4 in a...Ch. 13 - Prob. 13.100QPCh. 13 - Consider the three mercury manometers shown in the...Ch. 13 - A forensic chemist is given a white powder for...Ch. 13 - Prob. 13.103QPCh. 13 - A solution of 1.00 g of anhydrous aluminum...Ch. 13 - Explain why reverse osmosis is (theoretically)...Ch. 13 - What masses of sodium chloride, magnesium...Ch. 13 - The osmotic pressure of blood plasma is...Ch. 13 - Prob. 13.108QPCh. 13 - A protein has been isolated as a salt with the...Ch. 13 - A nonvolatile organic compound Z was used to make...Ch. 13 - Prob. 13.111QPCh. 13 - State which of the alcohols listed in Problem...Ch. 13 - Before a carbonated beverage bottle is sealed, it...Ch. 13 - Iodine (I2) is only sparingly soluble in water...Ch. 13 - (a) The root cells of plants contain a solution...Ch. 13 - Hemoglobin, the oxygen-transport protein, binds...Ch. 13 - Prob. 13.117QPCh. 13 - In the apparatus shown, what will happen if the...Ch. 13 - Concentrated hydrochloric acid is usually...Ch. 13 - Explain each of the following statements: (a) The...Ch. 13 - Prob. 13.121QPCh. 13 - A 1.32-g sample of a mixture of cyclohexane...Ch. 13 - How does each of the following affect the...Ch. 13 - A solution contains two volatile liquids A and B....Ch. 13 - Prob. 13.125QPCh. 13 - A mixture of ethanol and 1-propanol behaves...Ch. 13 - Ammonia (NH3) is very soluble in water, but...Ch. 13 - For ideal solutions, the volumes are additive....Ch. 13 - Acetic acid is a weak acid that ionizes in...Ch. 13 - Which vitamins (sec the given structures) do you...Ch. 13 - Calculate the percent by mass of the solute in...Ch. 13 - Acetic acid is a polar molecule and can form...Ch. 13 - Prob. 13.133QPCh. 13 - Fish in the Antarctic Ocean swim in water at about...Ch. 13 - Why are ice cubes (e.g., those you see in the...Ch. 13 - Prob. 13.136QPCh. 13 - Two beakers are placed in a closed container...Ch. 13 - (a) Derive the equation relating the molality (m)...Ch. 13 - At 27C, the vapor pressure of pure water is 23.76...Ch. 13 - A very long pipe is capped at one end with a...Ch. 13 - A mixture of liquids A and B exhibits ideal...Ch. 13 - Use Henrys law and the ideal gas equation to prove...Ch. 13 - Prob. 13.143QPCh. 13 - Prob. 13.144QPCh. 13 - The diagram here shows vapor pressure curves for...Ch. 13 - Valinomycin is an antibiotic. It functions by...Ch. 13 - Prob. 13.147QPCh. 13 - Prob. 13.148QPCh. 13 - Prob. 13.149QPCh. 13 - Explain why we cannot use osmotic pressure to...Ch. 13 - Which of the following processes is accompanied by...Ch. 13 - For each of the processes depicted here, determine...Ch. 13 - For each of the processes depicted here, determine...Ch. 13 - Prob. 13.4KSP
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