The mole fraction of sodium chloride, NaCl, in a saturated aqueous solution is 0,220.(a) What is the molality (molal concentration) of this solution?(b) What is the molarity (molar concentration) of this solution if it has a density of 1,150 g.cm–3?(c) What is the mass percentage NaCl in the solution?Which of the following liquids are likely to be miscible with water: 1-propanol (CH3CH2CH2OH), carbon tetrachloride (CCl4), hexane (C6H14), and acetic acid (CH3CO2H)? Motivate your choice(s) using your knowledge of intermolecular forces.The vapor pressure of pure water at 45 °C is 71,9 mm Hg. What is the vapor pressure of a mixture of 21,0 g sucrose (C12H22O11, molar mass 342,3 g/mol) and 79,0 g water?What is the freezing point of a solution containing 4,78 grams naphthalene (molar mass = 128,2 g/mol) dissolved in 32,0 grams paradichlorobenzene? The freezing point of pure paradichlorobenzene is 53,0 °C and the freezing point depression constant, Kfp, is –7,10 °C/m.Describe how you would adjust the temperature if you wanted to increase the solubility of a gas in a liquid.Most fish have a very difficult time surviving in lakes that are at altitudes greater than 3500 m above sea level. How could Henry’s law be used to account for this fact?Toluene (C6H5CH3) and benzene (C6H6) are two organic liquids with very similar properties, and when they are mixed, they form an ideal solution. A mixture contains 35,6 g of toluene and 125 g of benzene. Toluene has a vapour pressure of 22 mm Hg, and benzene has a vapour pressure of 75 mm Hg at 25°C.(a) Which compound, toluene or benzene, would have the highest boiling point? Motivate your answer.(b) Calculate the total vapour pressure over the mixture at 25°C.The mole fraction of sodium chloride, NaCl, in a saturated aqueous solution is 0,220.(a) What is the molality (molal concentration) of this solution?(b) What is the molarity (molar concentration) of this solution if it has a density of 1,150 g.cm–3?(c) What is the mass percentage NaCl in the solution?Which of the following liquids are likely to be miscible with water: 1-propanol (CH3CH2CH2OH), carbon tetrachloride (CCl4), hexane (C6H14), and acetic acid (CH3CO2H)? Motivate your choice(s) using your knowledge of intermolecular forces.The vapor pressure of pure water at 45 °C is 71,9 mm Hg. What is the vapor pressure of a mixture of 21,0 g sucrose (C12H22O11, molar mass 342,3 g/mol) and 79,0 g water?What is the freezing point of a solution containing 4,78 grams naphthalene (molar mass = 128,2 g/mol) dissolved in 32,0 grams paradichlorobenzene? The freezing point of pure paradichlorobenzene is 53,0 °C and the freezing point depression constant, Kfp, is –7,10 °C/m.Describe how you would adjust the temperature if you wanted to increase the solubility of a gas in a liquid.Most fish have a very difficult time surviving in lakes that are at altitudes greater than 3500 m above sea level. How could Henry’s law be used to account for this fact?Toluene (C6H5CH3) and benzene (C6H6) are two organic liquids with very similar properties, and when they are mixed, they form an ideal solution. A mixture contains 35,6 g of toluene and 125 g of benzene. Toluene has a vapour pressure of 22 mm Hg, and benzene has a vapour pressure of 75 mm Hg at 25°C.(a) Which compound, toluene or benzene, would have the highest boiling point? Motivate your answer.(b) Calculate the total vapour pressure over the mixture at 25°C.

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ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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The mole fraction of sodium chloride, NaCl, in a saturated aqueous solution is 0,220.
1. (a) What is the molality (molal concentration) of this solution?
2. (b) What is the molarity (molar concentration) of this solution if it has a density of 1,150 g.cm–3?
3. (c) What is the mass percentage NaCl in the solution?
Which of the following liquids are likely to be miscible with water: 1-propanol (CH3CH2CH2OH), carbon tetrachloride (CCl4), hexane (C6H14), and acetic acid (CH3CO2H)? Motivate your choice(s) using your knowledge of intermolecular forces.
The vapor pressure of pure water at 45 °C is 71,9 mm Hg. What is the vapor pressure of a mixture of 21,0 g sucrose (C12H22O11, molar mass 342,3 g/mol) and 79,0 g water?
What is the freezing point of a solution containing 4,78 grams naphthalene (molar mass = 128,2 g/mol) dissolved in 32,0 grams paradichlorobenzene? The freezing point of pure paradichlorobenzene is 53,0 °C and the freezing point depression constant, Kfp, is –7,10 °C/m.
Describe how you would adjust the temperature if you wanted to increase the solubility of a gas in a liquid.
Most fish have a very difficult time surviving in lakes that are at altitudes greater than 3500 m above sea level. How could Henry’s law be used to account for this fact?
Toluene (C6H5CH3) and benzene (C6H6) are two organic liquids with very similar properties, and when they are mixed, they form an ideal solution. A mixture contains 35,6 g of toluene and 125 g of benzene. Toluene has a vapour pressure of 22 mm Hg, and benzene has a vapour pressure of 75 mm Hg at 25°C.
1. (a) Which compound, toluene or benzene, would have the highest boiling point? Motivate your answer.
2. (b) Calculate the total vapour pressure over the mixture at 25°C.
  The mole fraction of sodium chloride, NaCl, in a saturated aqueous solution is 0,220.
  
  (a) What is the molality (molal concentration) of this solution?
  
  (b) What is the molarity (molar concentration) of this solution if it has a density of 1,150 g.cm–3?
  
  (c) What is the mass percentage NaCl in the solution?
  
  Which of the following liquids are likely to be miscible with water: 1-propanol (CH3CH2CH2OH), carbon tetrachloride (CCl4), hexane (C6H14), and acetic acid (CH3CO2H)? Motivate your choice(s) using your knowledge of intermolecular forces.
  
  The vapor pressure of pure water at 45 °C is 71,9 mm Hg. What is the vapor pressure of a mixture of 21,0 g sucrose (C12H22O11, molar mass 342,3 g/mol) and 79,0 g water?
  
  What is the freezing point of a solution containing 4,78 grams naphthalene (molar mass = 128,2 g/mol) dissolved in 32,0 grams paradichlorobenzene? The freezing point of pure paradichlorobenzene is 53,0 °C and the freezing point depression constant, Kfp, is –7,10 °C/m.
  
  Describe how you would adjust the temperature if you wanted to increase the solubility of a gas in a liquid.
  
  Most fish have a very difficult time surviving in lakes that are at altitudes greater than 3500 m above sea level. How could Henry’s law be used to account for this fact?
  
  Toluene (C6H5CH3) and benzene (C6H6) are two organic liquids with very similar properties, and when they are mixed, they form an ideal solution. A mixture contains 35,6 g of toluene and 125 g of benzene. Toluene has a vapour pressure of 22 mm Hg, and benzene has a vapour pressure of 75 mm Hg at 25°C.
  
  (a) Which compound, toluene or benzene, would have the highest boiling point? Motivate your answer.
  
  (b) Calculate the total vapour pressure over the mixture at 25°C.

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