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Jeopardy

Jeopardy. Soln Process. Sat’d solns. Concentration. Colligative Pr. Colloids. Q $100. Q $100. Q $100. Q $100. Q $100. Q $200. Q $200. Q $200. Q $200. Q $200. Q $300. Q $300. Q $300. Q $300. Q $300. Q $400. Q $400. Q $400. Q $400. Q $400. Q $500. Q $500. Q $500. Q $500.

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Jeopardy

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  1. Jeopardy Soln Process Sat’d solns Concentration Colligative Pr Colloids Q $100 Q $100 Q $100 Q $100 Q $100 Q $200 Q $200 Q $200 Q $200 Q $200 Q $300 Q $300 Q $300 Q $300 Q $300 Q $400 Q $400 Q $400 Q $400 Q $400 Q $500 Q $500 Q $500 Q $500 Q $500 Final Jeopardy

  2. $100 Question from H1 What is the principle type of Solute-solvent interaction for: KBr in water?

  3. $100 Answer from H1 Ion-dipole

  4. $200 Question from H1 When ammonium chloride Dissolves in water, the solution Becomes colder. Is the solution Process exothermic or endothermic?

  5. $200 Answer from H1 endothermic

  6. $300 Question from H1 The enthalpy of solution of KBr In water is +198 kJ/mol. Nevertheless, the solubility of KBr Is relatively high. Why?

  7. $300 Answer from H1 Entropy

  8. $400 Question from H1 Indicate the type of solute-solvent Interaction for methanol in water

  9. $400 Answer from H1 Hydrogen bonding or You could have said dipole-dipole

  10. $500 Question from H1 • Rank the solutions from weakest • To strongest solute-solvent • Interactions • KCl in water • (b) CH2Cl2 in benzene • (c) HCl in acetonitrile

  11. $500 Answer from H1 A > C > B

  12. $100 Question from H2 Water and glycerol CH2(OH)CH(OH)CH2(OH) are miscible in all proportions. What does this Mean? Explain why?

  13. $100 Answer from H2 They mix in all proportions without Forming a precipitate. Reason is due to hydrogen bonding Or strong dipole-dipole interactions

  14. $200 Question from H2 Would you expect steric acid CH3(CH2)16COOH to be more soluble In water or in carbon tetrachloride?

  15. $200 Answer from H2 Carbon tetrachloride Reason is due to weak dipole- Weak dipole interactions

  16. $300 Question from H2 Would you expect alanine (an amino Acid) to be more soluble in water Or in hexane?

  17. $300 Answer from H2 water

  18. $400 Question from H2 Common laboratory solvents include Acetone (CH3COCH3), methanol CH3OH, toluene (C6H5CH3) and Water. Which of these is the best Solvent for non-polar solutes.

  19. $400 Answer from H2 toluene

  20. $500 Question from H2 The solubility of MnSO4 * H2O In water at 20oC is 70 g per 100 mL Of water. Is 1.22 M solution of MnSO4*H2O In water at 20oC, saturated, super-sat Or unsaturated?

  21. $500 Answer from H2 B > A > C

  22. $100 Question from H3 The following equation refers to Which law? Sg = kPg

  23. $100 Answer from H3 Henry’s law

  24. $200 Question from H3 • In Raolt’s law, the Xa refers to: • Mol fraction of solute • (b) Mol fraction of solvent

  25. $200 Answer from H3 B

  26. $300 Question from H3 • Molalilty is defined by: • Liters of solution • (b) Kilograms of solvent • (c ) grams of solvent

  27. $300 Answer from H3 B

  28. $400 Question from H3 • A freezing point depression can • Be calculated using • Molality • (b) Molarity • (c ) grams per liter

  29. $400 Answer from H3 A

  30. $500 Question from H3 • Which of the following pair is more • Likely to be soluble in hexane C6H14? • Benzene C6H6 • (b) Glycerol CH(OH)CH(OH)CH2OH

  31. $500 Answer from H3 A: Benzene

  32. $100 Question from H4 • How does increasing the • Concentration of a non-volatile • Solute in water affect the following • Properties? • Vapor pressure • (b) Freezing point

  33. $100 Answer from H4 • Decreases • (b) Depresses freezing point

  34. $200 Question from H4 Consider two solutions, one formed By adding 10 g of glucose (C6H12O6) To 1 L of water and the other formed By adding 10 g of sucrose (C12H22O11) To 1 L water. Are the vapor pressures Over the two solutions the same?

  35. $200 Answer from H4 No. Would have a different mol Value and therefore a different Molality affecting Fp and Bp.

  36. $300 Question from H4 Why does a 0.10 m aqueous solution Of NaCl have a higher boiling point Than a 0.10 m aqueous solution of C6H12O6?

  37. $300 Answer from H4 NaCl actually has 2 moles of ions Per mole of NaCl

  38. $400 Question from H4 • Arrange the following aqueous • Solutions, each with 10% by mass of • Solute, in order of increasing Bp. • Glucose • (b) Sucrose • (c ) sodium nitrate

  39. $400 Answer from H4 C > A > B

  40. $500 Question from H4 • List the following aqueous solutions • In order of decreasing Fp. • 0.040 m glycerin (C3H8O3) • (b) 0.020 m KBr • (c ) 0.030 m phenol (C6H5OH)

  41. $500 Answer from H4 B > A > C

  42. $100 Question from H5 This phenomenon creates shafts of Light in rain forests and in certain Heterogeneous mixtures.

  43. $100 Answer from H5 The Tyndall effect

  44. $200 Question from H5 • Which of the following is not a • Colloid? • Smoke • (b) Fog • ( c) Kool-Aid drink

  45. $200 Answer from H5 C

  46. $300 Question from H5 • Butter is an example of what type • Of colloid? • Foam • (b) Solid foam • (c ) solid emulsion • (d) aerosol

  47. $300 Answer from H5 Solid emulsion

  48. $400 Question from H5 Name the two type of colloidal Suspensions.

  49. $400 Answer from H5 Hydrophilic and hydrophobic

  50. $500 Question from H5 If absorption means to pass into The interior, adsorption means to___

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