General Chemistry: Principles and Modern Applications (11th Edition)
11th Edition
ISBN: 9780132931281
Author: Ralph H. Petrucci, F. Geoffrey Herring, Jeffry D. Madura, Carey Bissonnette
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Question
Chapter 14, Problem 42E
Interpretation Introduction
Interpretation:
The mass of KNO3 recrystallized needs to be determined.
Concept introduction:
Recrystallization is a technique for purifying various chemicals. When both the impurities as well as the compound are dissolved in a particular amount, either the impurities or the desired compound are removed from the given solution, leaving other impurities behind. When the compound gets precipitated, these are the crystals which are left behind.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
6.41 g of MgSO₄ is placed into 100.0 mL of water. The water's temperature increases by 6.70°C. Calculate ∆H, in kJ/mol, for the dissolution of MgSO₄. (The specific heat of water is 4.184 J/g･°C and the density of the water is 1.00 g/mL). You can assume that the specific heat of the solution is the same as that of water.
7.16 g of MgSO₄ is placed into 100.0 mL of water. The water's temperature increases by 6.70°C. Calculate ∆H, in kJ/mol, for the dissolution of MgSO₄. (The specific heat of water is 4.184 J/g･°C and the density of the water is 1.00 g/mL). You can assume that the specific heat of the solution is the same as that of water.
A 44.0 g sample of an unknown metal at 100.0 °C is placed in a constant pressure calorimeter containing 80.0 g of water at 24.8 °C. The final temperature is 28.4 °C. Assume that the heat capacity of the calorimeter equals the heat capacity of the water it contains. Calculate the specific heat capacity of the metal and use the result to identify the metal.
Chapter 14 Solutions
General Chemistry: Principles and Modern Applications (11th Edition)
Ch. 14 - Which of the following do you expect to be most...Ch. 14 - Which of the following is moderately soluble both...Ch. 14 - Substances that dissolve in water generally do not...Ch. 14 - Prob. 4ECh. 14 - Two of the substances listed here highly soluble...Ch. 14 - Benzoic acid, C8H8COOH, is much more soluble in...Ch. 14 - Prob. 7ECh. 14 - Explain the observation that all metal nitrates...Ch. 14 - A saturated aqueous solution of NaBr at 20C...Ch. 14 - Prob. 10E
Ch. 14 - Prob. 11ECh. 14 - You are asked to prepare 125.0 mL of 0.0321 M...Ch. 14 - Prob. 13ECh. 14 - Prob. 14ECh. 14 - Prob. 15ECh. 14 - Prob. 16ECh. 14 - The sulfate ion level in a municipal water supply...Ch. 14 - A water sample is found to have 9.4 ppb of...Ch. 14 - Prob. 19ECh. 14 - Prob. 20ECh. 14 - How many milliliters at the ethanol-water solution...Ch. 14 - Prob. 22ECh. 14 - What is the molarity of CO2 in liter ocean water...Ch. 14 - Prob. 24ECh. 14 - Prob. 25ECh. 14 - Prob. 26ECh. 14 - How many grams of iodine, l2 , must be dissolved...Ch. 14 - How many grams of water would you add to 1.00 kg...Ch. 14 - Prob. 29ECh. 14 - A 10.00%-by-man solution of ethanol, CH2CH2OH , in...Ch. 14 - Prob. 31ECh. 14 - Prob. 32ECh. 14 - Prob. 33ECh. 14 - Prob. 34ECh. 14 - What volume of glycerol,...Ch. 14 - Prob. 36ECh. 14 - Prob. 37ECh. 14 - The amount of CO2 in the ocean is approximately...Ch. 14 - Prob. 39ECh. 14 - Prob. 40ECh. 14 - Prob. 41ECh. 14 - Prob. 42ECh. 14 - Under an O2(g) pressure of 1.00 atm, 28.31mL of...Ch. 14 - Prob. 44ECh. 14 - Natural gas consists about 90% methane, CM. Assume...Ch. 14 - At 1.00 atm, the solubility of O2 in water is...Ch. 14 - The aqueous solubility at 20C of Ar at 1.00 atm...Ch. 14 - Prob. 48ECh. 14 - Prob. 49ECh. 14 - Prob. 50ECh. 14 - What are the partial and total vapor pressures of...Ch. 14 - Prob. 52ECh. 14 - Calculate the vapor pressure at 25C of a solution...Ch. 14 - Calculate the vapor pressure at 20C of a saturated...Ch. 14 - Styrene, used in the manufacture of polystyrene...Ch. 14 - Prob. 56ECh. 14 - A benzene-toluene solution with banz=0.300 has a...Ch. 14 - Prob. 58ECh. 14 - Prob. 59ECh. 14 - Prob. 60ECh. 14 - Prob. 61ECh. 14 - Prob. 62ECh. 14 - Prob. 63ECh. 14 - Prob. 64ECh. 14 - Prob. 65ECh. 14 - Use the concentration of an istonic solution,...Ch. 14 - Prob. 67ECh. 14 - The two solutions pictured here are separated by a...Ch. 14 - of an unknown compound reduces e freezing point of...Ch. 14 - Prob. 70ECh. 14 - Prob. 71ECh. 14 - Prob. 72ECh. 14 - A compound is 42.9% C, 2.4% H, 16.7%N, and 38.1%...Ch. 14 - Nicotinamide is a water-soluble vitamin important...Ch. 14 - Prob. 75ECh. 14 - Coniferin is glycoside (a derivative of a sugar)...Ch. 14 - Cooks often add some salt to water before boding...Ch. 14 - An important test for the purity of an organic...Ch. 14 - Prob. 79ECh. 14 - If ocean water consisted of 3.5% salt, what would...Ch. 14 - Predict the approximate freezing points of 0.10m...Ch. 14 - Calculate the van’t Hoff factors of the following...Ch. 14 - NH2(aq) conducts electric current only weakly. The...Ch. 14 - Prob. 84ECh. 14 - Prob. 85ECh. 14 - Prob. 86ECh. 14 - Prob. 87IAECh. 14 - Prob. 88IAECh. 14 - Prob. 89IAECh. 14 - Prob. 90IAECh. 14 - A solid mixture consists of 85.0% KNO2 and 15.0%...Ch. 14 - Suppose you have available 2.50 L of a solution (d...Ch. 14 - Prob. 93IAECh. 14 - Prob. 94IAECh. 14 - Prob. 95IAECh. 14 - Nitrobenzene, C6H2NO2 , and benzene, C6H8 , are...Ch. 14 - Prob. 97IAECh. 14 - Prob. 98IAECh. 14 - Prob. 99IAECh. 14 - Suppose that I 00mg of gold obtained in a...Ch. 14 - At 20C , liquid benzene has a density of...Ch. 14 - The two compounds whose structures are depicted...Ch. 14 - Prob. 103IAECh. 14 - Prob. 104IAECh. 14 - Prob. 105IAECh. 14 - We noted m Figure 14-17 that the liquid and vapor...Ch. 14 - A saturated solution prepared at 70C contains...Ch. 14 - Prob. 108IAECh. 14 - Prob. 109IAECh. 14 - Prob. 110IAECh. 14 - Prob. 111IAECh. 14 - Prob. 112IAECh. 14 - Prob. 113FPCh. 14 - The phase diagram shown is for mixtures of HCI and...Ch. 14 - The laboratory device pictured on the following...Ch. 14 - Prob. 116FPCh. 14 - Prob. 117SAECh. 14 - Briefly describe each of the following ides or...Ch. 14 - Explain the important distinctions between each...Ch. 14 - Prob. 120SAECh. 14 - Prob. 121SAECh. 14 - Prob. 122SAECh. 14 - Prob. 123SAECh. 14 - An ideal liquid solution has two volatile...Ch. 14 - Prob. 125SAECh. 14 - Prob. 126SAECh. 14 - A solution (d=1.159g/mL) is 62.0% glycerol,...Ch. 14 - Prob. 128SAECh. 14 - Prob. 129SAECh. 14 - Prob. 130SAECh. 14 - Prob. 131SAECh. 14 - Prob. 132SAECh. 14 - Prob. 133SAECh. 14 - What is the mole fractions of a monvolatile solute...Ch. 14 - What is the osmotic pressure, in bar, of 15.2L of...Ch. 14 - What is the weight percent of 23.4 g of CaF2 if...Ch. 14 - Prob. 137SAECh. 14 - Prob. 138SAE
Knowledge Booster
Similar questions
- Maple syrup sap is 3% sugar (sucrose) and 97% water bymass. Maple syrup is produced by heating the sap toevaporate a certain amount of the water. (a) Describe what happens to the composition and boilingpoint of the solution as evaporation takes place. (b) A rule of thumb among maple syrup producers is thatthe finished syrup should boil about 4 C higher than theoriginal sap being boiled. Explain the chemistry behindthis guideline. (c) If the finished product boils 4 C higher than the originalsap, calculate the concentration of sugar in the finalproduct. Assume that sugar is the only solute and theoperation is done at 1 atm pressure.arrow_forwardActually, the carbon in CO2(g) is thermodynamically unstable with respect to the carbon in calcium carbonate(limestone). Verify this by determining the standardGibbs free energy change for the reaction of lime,CaO(s), with CO2(g) to make CaCO3(s).arrow_forwardSimple acids such as formic acid, HCOOH, and acetic acid, CH3COOH, are very soluble in water; however, fatty acids such as stearic acid, CH3(CH2)16COOH, and palmitic acid, CH3(CH2)14COOH, are water-insoluble. Based on what you know about the solubility of alcohols, explain the solubility of these organic acids.arrow_forward
- For each of the following pairs of solutions, select the solution for which solute solubility is greatest. a. Ammonia gas in water with P = 1 atm and T = 50C Ammonia gas in water with P = 1 atm and T = 90C b. Carbon dioxide gas in water with P = 2 atm and T = 50C Carbon dioxide gas in water with P = 1 atm and T = 50C c. Table salt in water with P = 1 atm and T = 60C Table salt in water with P = 1 atm and T = 50C d. Table sugar in water with P = 2 atm and T = 40C Table sugar in water with P = 1 atm and T = 70Carrow_forwardFor each of the following pairs of solutions, select the solution for which solute solubility is greatest. a. Oxygen gas in water with P = 1 atm and T = 10C Oxygen gas in water with P = 1 atm and T = 20C b. Nitrogen gas in water with P = 2 atm and T = 50C Nitrogen gas in water with P = 1 atm and T = 70C c. Table salt in water with P = 1 atm and T = 40C Table salt in water with P = 1 atm and T = 70C d. Table sugar in water with P = 3 atm and T = 30C Table sugar in water with P = 1 atm and T = 80Carrow_forwardWhen 7.11 g NH4NO3 is added to 100 mL water, the temperature of the calorimeter contents decreases from 22.1 C to 17.1 C. Assuming that the mixture has the same specific heat as water and a mass of 107 g, calculate the heat q. Is the dissolution of ammonium nitrate exothermic or endothermic?arrow_forward
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
Chemistry by OpenStax (2015-05-04)ChemistryISBN:9781938168390Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark BlaserPublisher:OpenStax
General, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage Learning
Chemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning
Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning
Introductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
Chemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning
Chemistry by OpenStax (2015-05-04)
Chemistry
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:OpenStax
General, Organic, and Biological Chemistry
Chemistry
ISBN:9781285853918
Author:H. Stephen Stoker
Publisher:Cengage Learning
Chemistry: Principles and Practice
Chemistry
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Cengage Learning
Chemistry: The Molecular Science
Chemistry
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:Cengage Learning
Introductory Chemistry: A Foundation
Chemistry
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Chemistry & Chemical Reactivity
Chemistry
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:Cengage Learning