Problem 12.1QP Problem 12.2QP Problem 12.3QP: Explain in terms of intermolecular attractions why octane is immiscible in water. Problem 12.4QP Problem 12.5QP: Using the concept of hydration, describe the process of dissolving a sodium chloride crystal in... Problem 12.6QP: What is the usual solubility behavior of an ionic compound in water when the temperature is raised?... Problem 12.7QP: Give one example of each: a salt whose heat of solution is exothermic and a salt whose heat of... Problem 12.8QP: What do you expect to happen to a concentration of dissolved gas in a solution as the solution is... Problem 12.9QP Problem 12.10QP: Pressure has an effect on the solubility of oxygen in water but a negligible effect on the... Problem 12.11QP Problem 12.12QP: When two beakers containing different concentrations of a solute in water are placed in a closed... Problem 12.13QP Problem 12.14QP Problem 12.15QP Problem 12.16QP Problem 12.17QP: One can often see sunbeams passing through the less dense portions of clouds. What is the... Problem 12.18QP Problem 12.19QP: Explain on the basis that like dissolves like why glycerol, CH2OHCHOHCH2OH, is miscible in water but... Problem 12.20QP Problem 12.21QP: Calculate the number of moles of barium chloride in 427 g of a 3.17% by mass barium chloride... Problem 12.22QP Problem 12.23QP: If 291g of a compound is added to 1.02 kg of water to increase the boiling point by 5.77C, what is... Problem 12.24QP: A 5.1-g sample of CaCl2 is dissolved in a beaker of water. Which of the following statements is true... Problem 12.25QP: Consider two hypothetical pure substances, AB(s) and XY(s). When equal molar amounts of these... Problem 12.26QP: Equal numbers of moles of two soluble, substances, substance A and substance B, are placed into... Problem 12.27QP: Even though the oxygen demands of trout and bass are different, they can exist in the same body of... Problem 12.28QP: You want to purchase a salt to melt snow and ice on your sidewalk. Which one of the following salts... Problem 12.29QP Problem 12.30QP Problem 12.31QP Problem 12.32QP: Consider the following dilute NaCl(aq) solutions. a Which one will boil at a higher temperature? b... Problem 12.33QP Problem 12.34QP Problem 12.35QP: If l-mol samples of urea, a nonelectrolyte, sodium chloride, and calcium chloride are each dissolved... Problem 12.36QP Problem 12.37QP Problem 12.38QP Problem 12.39QP Problem 12.40QP Problem 12.41QP: Arrange the following substances in order of increasing solubility in hexane, C6H34: CH2OHCH2OH,... Problem 12.42QP: Indicate which of the following is more soluble in ethanol, C2H5OH: acetic acid, CH3COOH, or stearic... Problem 12.43QP Problem 12.44QP: Which of the following ions would be expected to have the greater energy of hydration, F or Cl? Problem 12.45QP: Arrange the following alkaline-earth-metal iodates in order of increasing solubility in water and... Problem 12.46QP: Explain the trends in solubility (grams per 100 mL of water) of the alkali-metal fluorides and... Problem 12.47QP: The solubility of carbon dioxide in water is 0.161 g CO2 in 100 mL of water at 20C and 1.00 atm. A... Problem 12.48QP Problem 12.49QP Problem 12.50QP Problem 12.51QP Problem 12.52QP Problem 12.53QP: Vanillin, C2H2O3, occurs naturally in vanilla extract and is used as a flavoring agent. A 39.1-mg... Problem 12.54QP: Lauryl alcohol, C12H25OH, is prepared from coconut oil; it is used to make sodium lauryl sulfate, a... Problem 12.55QP: Fructose, C6H12O6, is a sugar occurring in honey and fruits. The sweetest sugar, it is nearly twice... Problem 12.56QP: Caffeine. C8H10N4O2, is a stimulant found in tea and coffee A sample of the substance was dissolved... Problem 12.57QP: A 100.0-g sample of a brand of rubbing alcohol contains 65.0 g of isopropyl alcohol, C3H7OH, and... Problem 12.58QP: An automobile antifreeze solution contains 2.50 kg of ethylene glycol, CH2OHCH2OH, and 2.25 kg of... Problem 12.59QP Problem 12.60QP Problem 12.61QP: Concentrated hydrochloric acid contains 1.00 mol HCl dissolved in 3.31 mol H2O. What is the mole... Problem 12.62QP: Concentrated aqueous ammonia contains 1.00 mol NH3 dissolved in 2.50 mol H2O. What is the mole... Problem 12.63QP Problem 12.64QP Problem 12.65QP: A solution of vinegar is 0.763 M acetic arid, H2C4H4O. The density of the vinegar is 1.004 g/mL.... Problem 12.66QP: A beverage contains tartaric acid, H2C4H4O6, a substance obtained from grapes during wine making. If... Problem 12.67QP: Calculate the vapor pressure at 35C of a solution made by dissolving 24.8 g of sucrose, C12H22O31,... Problem 12.68QP: What is the vapor pressure at 23C of a solution of 1.20 g of naphthalene, C10H8, in 25.6 g of... Problem 12.69QP: What is the boiling point of a solution of 0.133 g of glycerol, C3H8O3, in 20.0 g of water? What is... Problem 12.70QP: A solution was prepared by dissolving 0.800 g of sulfur, Sg, in 100.0 g of acetic acid, HC2H3O2.... Problem 12.71QP: An aqueous solution of a molecular compound freezes at 0.086C. What is the molality of the solution? Problem 12.72QP: Urea, (NH2)2CO, is dissolved in 250.0 g of water. The solution freezes at 0.085C. How many grams of... Problem 12.73QP Problem 12.74QP Problem 12.75QP: Safrole is contained in oil of sassafras and was once used to flavor root beer. A 2.39-mg sample of... Problem 12.76QP: Butylated hydroxytoluene (BHT) is used as an antioxidant in processed foods. (It prevents fats and... Problem 12.77QP Problem 12.78QP Problem 12.79QP: What is the freezing point of 0.0075 m aqueous calcium chloride, CaCl2? Use the formula of the salt... Problem 12.80QP: What is the freezing point of 0.0088 m aqueous sodium phosphate, Na3PO4? Use the formula of the salt... Problem 12.81QP Problem 12.82QP: In a mountainous location, the boiling point of pure water is found to be 95C. How many grams of... Problem 12.83QP Problem 12.84QP Problem 12.85QP Problem 12.86QP Problem 12.87QP: A gaseous mixture consists of 87.0 mole percent N2 and 13.0 mole percent O2 (the approximate... Problem 12.88QP: A natural gas mixture consists of 88.0 mole percent CH4 (methane) and 12.0 mole percent C2 H6... Problem 12.89QP Problem 12.90QP Problem 12.91QP: A 55-g sample of a gaseous fuel mixture contains 0.43 mole fraction propane, C3H3; the remainder of... Problem 12.92QP Problem 12.93QP: A liquid solution consists of 0.30 mole fraction ethylene dibromide, C2H4Br2, and 0.70 mole fraction... Problem 12.94QP: What is the total vapor pressure at 20C of a liquid solution containing 0.30 mole fraction benzene,... Problem 12.95QP: A sample of potassium aluminum sulfate 12-hydrate. KAl(SO4)212H2O, containing 101.5 mg is dissolved... Problem 12.96QP: A sample of aluminum sulfate 18-hydrate, Al2(SO4)3. 18H2O, containing 125.0 mg is dissolved in 1.000... Problem 12.97QP: Urea, (NH2)2CO, has been used to melt ice from sidewalks, because the use of salt is harmful to... Problem 12.98QP: Calcium chloride, CaCl2, has been used to melt ice from roadways. Given that the saturated solution... Problem 12.99QP Problem 12.100QP Problem 12.101QP: Which aqueous solution has the lower freezing point, 0 60 m CaCl2 or 0.60 m glucose? Problem 12.102QP: Which aqueous solution has the lower boiling point, 0.10 m NaBr or 0.10 m CaCl2? Problem 12.103QP: Commercially, sulfuric acid is usually obtained as an 98% solution. If this solution is 18 M, what... Problem 12.104QP Problem 12.105QP: A compound of manganese, carbon, and oxygen contains 28.17% Mn and 30.80% C. When 0.125 g of this... Problem 12.106QP: A compound of cobalt, carbon, and oxygen contains 28.10% C and 34.47% Co. When 0.147 g of this... Problem 12.107QP: The carbohydrate digitoxose contains 48.64% carbon and 8.16% hydrogen. The addition of 18.0 g of... Problem 12.108QP: Analysis of a compound gave 39.50% C, 2.21% H, and 58.30% Cl. When 0.855 g of this solid was... Problem 12.109QP: Fish blood has an osmotic pressure equal to that of seawater. If seawater freezes at 2.3C, what is... Problem 12.110QP Problem 12.111QP Problem 12.112QP Problem 12.113QP: How are phospholipids similar in structure to a soap molecule? What structural difference accounts... Problem 12.114QP Problem 12.115QP: Two samples of sodium chloride solutions are brought to a boil on a stove. One of the solutions... Problem 12.116QP Problem 12.117QP: You have an aqueous, dilute solution of a nonvolatile nonelectrolyte. Assuming that the solution is... Problem 12.118QP Problem 12.119QP Problem 12.120QP Problem 12.121QP: When 79.3 g of a particular compound is dissolved in 0.878 kg of water at 1 atm pressure, the... Problem 12.122QP: What is the boiling point of a solution made by adding 6.69 g of magnesium chloride to 250.0 g of... Problem 12.123QP Problem 12.124QP Problem 12.125QP Problem 12.126QP Problem 12.127QP Problem 12.128QP Problem 12.129QP: An aqueous solution is 0.797 M magnesium chloride. Given that the density of the solution is 1.108... Problem 12.130QP: A CaCl2 solution at 25C has an osmotic pressure of 16 atm and a density of 1.108 g/mL. What is the... Problem 12.131QP Problem 12.132QP Problem 12.133QP: The lattice enthalpy of sodium chloride, H for NaCl(s)Na+(g)+Cl(g) is 787 kJ/mol; the heat of... Problem 12.134QP Problem 12.135QP Problem 12.136QP Problem 12.137QP Problem 12.138QP: An aqueous solution is 20.0% by mass of sodium thiosulfate pentahydrate, Na2S2O35H2O. What is the... Problem 12.139QP Problem 12.140QP: The freezing point of 0.109 m aqueous formic acid is 0.210C. Formic acid, HCHO2, is partially... Problem 12.141QP: A compound of carbon, hydrogen, and oxygen was burned in oxygen, and 1.000 g of the compound... Problem 12.142QP: A compound of carbon, hydrogen, and oxygen was burned in oxygen, and 1.000 g of the compound... format_list_bulleted
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