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Jeopardy Colloids Q $100 Q $100 Q $100 Q $100 Q $100 Q $200 Q $200

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Presentation on theme: "Jeopardy Colloids Q $100 Q $100 Q $100 Q $100 Q $100 Q $200 Q $200"— Presentation transcript:

1 Jeopardy Colloids Q $100 Q $100 Q $100 Q $100 Q $100 Q $200 Q $200
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) m KBr (c ) 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___

51 $500 Answer from H5 Adhere to the surface

52 Final Jeopardy This author wrote, “If one man kills another,
it murder, but if a hundred thousand men kill another hundred thousand, it is considered an act of glory!?”

53 Final Jeopardy Answer Who is Tolstoy? (The book is Kingdom of God)

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