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Basic Chemistry Practice Test: Properties of Solutions
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Here are some properties of solutions: Homogeneous mixture: A solution is a homogeneous mixture of two or more substances. The particles of a solution are smaller than 10-9 meters in diameter and are too small to be seen by the naked eye. All components of a solution appear as a single phase. Colligative properties: These are the physical changes that occur when a solute is added to a solvent. Colligative properties are determined by the number of solute particles present, as well as the amount of solvent present. Solubility: This is the ability of a compound to dissolve in water. The... Show more
Basic Chemistry Practice Test: Properties of Solutions
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25 Questions

1. The process of a substance sticking to the surface of another is called
2. Colligative properties of solutions include all of the following except __________.
3. As the concentration of a solute in a solution increases, the freezing point of the solution __________ and the vapor pressure of the solution __________.
4. A solution contains 11% by mass of sodium chloride. This means that __________.
5. The concentration (M) of HCl in a solution prepared by dissolving 5.5 g of HCl in 200 g of C2H6O is__________ M. The density of the solution is 0.79 g/mL.
6. The solubility of MnSO4 monohydrate in water at 20 °C is 70.0 g per 100.0 mL of water. A solution at 20 °C that is 4.22 M in MnSO4 monohydrate is best described as a(n) __________ solution. The formula weight of MnSO4 monohydrate is 168.97 g/mol.
7. Which of the following choices has the compounds correctly arranged in order of increasing solubility in water? (least soluble to most soluble)
8. When solutions of strong electrolytes in water are formed, the ions are surrounded by water molecules. These interactions are best described as a case of __________.
9. A supersaturated solution __________.
10. A solution is prepared by dissolving calcium chloride in water and diluting to 500.0 mL. If this solution contains 44 ppm chloride ions, the concentration of calcium ions is __________ ppm.
11. Which one of the following is most soluble in hexane (C6H14 ) ?
12. Which of the following aqueous solutions will have the highest boiling point?
13. The concentration of urea in a solution prepared by dissolving 16 g of urea in 39 g of H2O is __________% by mass. The molar mass of urea is 60.0 g/mol.
14. The ideal value of i (van't Hoff factor) for (NH4 )3PO4 .
15. George is making spaghetti for dinner. He places 4.01 kg of water in a pan and brings it to a boil. Before addingthe pasta, he adds 58 g of table salt to the water and again brings it to a boil. The temperature of the salty, boiling water is __________°C. It is a nice day at sea level so that pressure is 1.00 atm. Assume negligible evaporation of water. Kb for water is 0.52°C/m.
16. The vapor pressure of pure water at 25 °C is 23.8 torr. Determine the vapor pressure (torr) of water at 25 °C above a solution prepared by dissolving 35 g of urea (a nonvolatile, non-electrolyte, MW = 60.0 g/mol) in75 g of water.
17. The solubility of nitrogen gas in water at 25 °C and a nitrogen pressure of 1.0 atm is 6.9 × 10-4M The solubilityof nitrogen in water at a nitrogen pressure of 0.80 atm is __________ M.
18. Which one of the following substances is more likely to dissolve in benzene (C6H6 ) ?
19. Hydrophobic colloids __________.
20. If the partial pressure of oxygen in the air a diver breathes is too great, __________.
21. On a clear day at sea level, with a temperature of 25 °C, the partial pressure of N2 in air is 0.78 atm and the concentration of nitrogen in water is 5.3 × 10-4M. When the partial pressure of N2 is __________ atm, the concentration in water is 1.1 × 10-3M.
22. The mole fraction of He in a gaseous solution prepared from 4.0 g of He, 6.5 g of Ar, and 10.0 g of Ne is __________.
23. A solution is prepared by dissolving 0.60 g of nicotine (a nonelectrolyte) in water to make 12 mL of solution. The osmotic pressure of the solution is 7.55 atm at 25 °C. The molecular weight of nicotine is ________ g/mol.
24. Which component of air is the primary problem in a condition known as 'the bends?'
25. A solution is prepared by dissolving 6.00 g of an unknown nonelectrolyte in enough water to make 1.00 L of solution. The osmotic pressure of this solution is 0.750 atm at 25.0 °C. What is the molecular weight (g/mol) of the unknown solute?

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