Introductory Chemistry (6th Edition)
Introductory Chemistry (6th Edition)
6th Edition
ISBN: 9780134302386
Author: Nivaldo J. Tro
Publisher: PEARSON
Question
Book Icon
Chapter 13, Problem 125E
Interpretation Introduction

Interpretation:

With the help of mass of unknown compound, mass of water and the freezing point, molar mass of the unknown compound is to be calculated.

Concept introduction:

Molality is the number of moles of solute to the mass of solvent.

Relation between number of moles (n) and molar mass is as follows:n=massmolar mass

To convert g to kilograms (kg), conversion factor will be (103 kg1 g)

The mass of the solvent should be in kilograms (kg).

Calculate molality as follows:

m=Moles soluteKilograms solvent …… (1)

The temperature at which change of liquid state to solid state takes place is called freezing point.

The freezing point depression is as follows:

ΔTf=m×Kf …… (2)

Here, ΔTf is the change in temperature of the freezing point in C0, m is the

Molality of the solution in mol solutekg solvent and Kf is the freezing point depression

Constant for the solvent.

For water:

Kf=1.86 C kg solventmol solute

Blurred answer
Students have asked these similar questions
Nido-boranes are structures with the molecular formula BnHn+4 that exhibit B-B, B-H-B and B-H bonds. Correct?
8:07 AM Wed Dec 18 Final Exam 2024 copy Home Insert Draw Page Layout Formulas Data Review AA 田 General A G fx Alexis Cozort ☑ ⚫ 61% A B D E F H K M N P R S T U 3+ 10 125 mM that yielded peak heights of Aa = 9 1-(a)A sample solution was examined under XRF to quantify the analyte Ce³+. Find the response factor F, when standardized concentration of analyte [Ce³+]A = concentration of internal standard S i.e. [In³*]s = 151 mM was spiked with standardized 1600 and As = 3015 respectively? 11 12 (i)Define F, F = Aa As [A] [S] + X 13 (*Define with variables) 4000 14 15 (ii)Calculate F, F = numeral (You will use the F value in part 1-(b) below) As 16 (*Calculate with numerals) 17 18 1-(b)To determine the unknown conc of analyte [Ce³+], a volume of 15 mL of internal standard S having a concentration [In³+]s = 0.264 M 19 20 was added to 45 mL of unknown, and the mixture was diluted to 100 mL in a volumetric flask. XRF analysis yielded a spectrum, Figure-1, where peak heights A and As are…
All structural types of Boron hydrides exhibit B-B, B-H-B and B-H bonds. Correct?

Chapter 13 Solutions

Introductory Chemistry (6th Edition)

Ch. 13 - What mass of ethylene glycol (C2H6O6) must be...Ch. 13 - Prob. 1ECh. 13 - Prob. 2ECh. 13 - Prob. 3ECh. 13 - Explain what like dissolves like means.Ch. 13 - What is solubility?Ch. 13 - Describe what happens when additional solute is...Ch. 13 - 7. Explain the difference between a strong...Ch. 13 - 8. How does gas solubility depend on...Ch. 13 - Prob. 9ECh. 13 - Prob. 10ECh. 13 - 11. When you heat water on a stove, bubbles form...Ch. 13 - Prob. 12ECh. 13 - How does gas solubility depend on pressure? How...Ch. 13 - 14. What is the difference between a dilute...Ch. 13 - 15. Define the concentration units mass percent...Ch. 13 - Prob. 16ECh. 13 - 17. How does the presence of a nonvolatile solute...Ch. 13 - What are colligative properties?Ch. 13 - Prob. 19ECh. 13 - Prob. 20ECh. 13 - 21. Two shipwreck survivors were rescued from a...Ch. 13 - 22 Why are intravenous fluids always isoosmotic...Ch. 13 - Prob. 23ECh. 13 - Prob. 24ECh. 13 - Identify the solute and solvent in each solution....Ch. 13 - Prob. 26ECh. 13 - Pick an appropriate solvent from Table 13.2 to...Ch. 13 - Prob. 28ECh. 13 - What are the dissolved particles in a solution...Ch. 13 - What are the dissolved particles in a solution...Ch. 13 - A solution contains 35 g of Nacl per 100 g of...Ch. 13 - 32. A solution contains 28 g of per 100 g of...Ch. 13 - A KNO3 solution containing 45 g of KNO3 per 100 g...Ch. 13 - Prob. 34ECh. 13 - Refer to Figure 13.4 to determine whether each of...Ch. 13 - Prob. 36ECh. 13 - Prob. 37ECh. 13 - Prob. 38ECh. 13 - Scuba divers breathing air at increased pressure...Ch. 13 - Prob. 40ECh. 13 - Prob. 41ECh. 13 - Prob. 42ECh. 13 - 43. A soft drink contains 42 g of sugar in 311 g...Ch. 13 - A soft drink contains 32 mg of sodium in 309 g of...Ch. 13 - Prob. 45ECh. 13 - Prob. 46ECh. 13 - Prob. 47ECh. 13 - Prob. 48ECh. 13 - Prob. 49ECh. 13 - Prob. 50ECh. 13 - Prob. 51ECh. 13 - Prob. 52ECh. 13 - Prob. 53ECh. 13 - A dioxin-contaminated water source contains 0.085%...Ch. 13 - Prob. 55ECh. 13 - Prob. 56ECh. 13 - Prob. 57ECh. 13 - Prob. 58ECh. 13 - Calculate the molarity of each solution. a. 0.127...Ch. 13 - Prob. 60ECh. 13 - Calculate the molarity of each solution. a. 22.6 g...Ch. 13 - Prob. 62ECh. 13 - 63. A 205-mL sample of ocean water contains 6.8 g...Ch. 13 - 64. A 355-mL can of soda pop contains 41 g of...Ch. 13 - Prob. 65ECh. 13 - Prob. 66ECh. 13 - Prob. 67ECh. 13 - Prob. 68ECh. 13 - Prob. 69ECh. 13 - Prob. 70ECh. 13 - Calculate the mass of NaCl in a 35-mL sample of a...Ch. 13 - 72. Calculate the mass of glucose in a 105-mL...Ch. 13 - Prob. 73ECh. 13 - 74. A laboratory procedure calls for making 500.0...Ch. 13 - 75. How many liters of a 0.500 M sucrose solution...Ch. 13 - Prob. 76ECh. 13 - Prob. 77ECh. 13 - Prob. 78ECh. 13 - Prob. 79ECh. 13 - Prob. 80ECh. 13 - Prob. 81ECh. 13 - Prob. 82ECh. 13 - Prob. 83ECh. 13 - 84. Describe how you would make 500.0 mL of a...Ch. 13 - To what volume should you dilute 25 mL of a 12 M...Ch. 13 - Prob. 86ECh. 13 - Prob. 87ECh. 13 - Prob. 88ECh. 13 - 89. Determine the volume of 0.150 M NaOH solution...Ch. 13 - Prob. 90ECh. 13 - Consider the reaction:...Ch. 13 - Prob. 92ECh. 13 - Prob. 93ECh. 13 - 94. A 25.0-mL sample of an unknown solution...Ch. 13 - 95. What is the minimum amount of necessary to...Ch. 13 - Prob. 96ECh. 13 - Prob. 97ECh. 13 - Prob. 98ECh. 13 - Prob. 99ECh. 13 - Prob. 100ECh. 13 - Prob. 101ECh. 13 - Prob. 102ECh. 13 - Prob. 103ECh. 13 - Prob. 104ECh. 13 - A glucose solution contains 55.8 g of glucose...Ch. 13 - 106. An ethylene glycol solution contains 21.2 g...Ch. 13 - Prob. 107ECh. 13 - Prob. 108ECh. 13 - Prob. 109ECh. 13 - Prob. 110ECh. 13 - Prob. 111ECh. 13 - Prob. 112ECh. 13 - What is the molarity of an aqueous solution that...Ch. 13 - Prob. 114ECh. 13 - Consider the reaction:...Ch. 13 - Prob. 116ECh. 13 - Prob. 117ECh. 13 - Prob. 118ECh. 13 - Prob. 119ECh. 13 - Prob. 120ECh. 13 - 121. An ethylene glycol solution is made using...Ch. 13 - A sucrose solution is made using 144 g of sucrose...Ch. 13 - A 250.0-mL sample of a 5.00 M glucose (C6H12O6)...Ch. 13 - Prob. 124ECh. 13 - Prob. 125ECh. 13 - 126. An aqueous solution containing 35.9 g of an...Ch. 13 - Prob. 127ECh. 13 - Prob. 128ECh. 13 - A 125-g sample contains only glucose (C6H12O6) and...Ch. 13 - A 13.03-g sample contains only ethylene glycol...Ch. 13 - Consider the molecular views of osmosis cells. For...Ch. 13 - What is wrong with this molecular view of a sodium...Ch. 13 - Prob. 133ECh. 13 - Prob. 134ECh. 13 - Prob. 135QGWCh. 13 - Prob. 136QGWCh. 13 - Prob. 137QGWCh. 13 - Prob. 138QGWCh. 13 - Data Interpretation and Analysis Read CHEMISTRY IN...
Knowledge Booster
Background pattern image
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Chemistry by OpenStax (2015-05-04)
Chemistry
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:OpenStax
Text book image
Chemistry & Chemical Reactivity
Chemistry
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:Cengage Learning
Text book image
Chemistry & Chemical Reactivity
Chemistry
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:Cengage Learning
Text book image
Chemistry: Matter and Change
Chemistry
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Glencoe/McGraw-Hill School Pub Co
Text book image
Chemistry: Principles and Practice
Chemistry
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Cengage Learning
Text book image
Chemistry: Principles and Reactions
Chemistry
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:Cengage Learning