1. Preparations for the final exam
Review Jeopardy!
Preparations for the final exam

2. Rules of Play You must try all problems, even if it is not your turn
This is individual Jeopardy! Each person will get the same number of turns
The only conversation time is between asking questions
If Alyssa asks you to settle down, you must do so willingly and immediately

3. Lewis, bonding and e- configs Intra/Inter forces and dissolving
Stoichiometry and solution stoichiometry
Intra/Inter forces and dissolving
Molarity and freezing point depression
100
200
300
400
500

4. Lewis, bonding and e- configs- 100
Identify the type of bond in KBr, and identify the number of valence electrons that each had before and after bonding.

5. Lewis, bonding and e- configs- 200
Determine the electron configuration for Cr6+ using the noble gas abbreviation

6. Lewis, bonding and e- configs- 300
Draw the Lewis structure for NH3, and state the polarity of the compound. What type of bonds are involved?

7. Lewis, bonding and e- configs- 400
Draw Lewis structures for the following, state whether there is a dipole moment, and why or why not.
CCl4 H2O SO42-

8. Lewis, bonding and e- configs- 500
What is a resonance structure?
Also, describe the difference between each of the following types of bonds:
-covalent
-polar covalent
-ionic

9. Stoichiometry and solution stoichiometry- 100
Determine the number of moles of sodium bicarbonate required to react exactly with 10.0 mL of 3.00 M HCl.
HCl(aq) + NaHCO3(s)  CO2(g) + H2O(l) + NaCl(aq)

10. Stoichiometry and solution stoichiometry- 200
Rebecca uses a mL vol. flask to make a dilution of a 6.0 M NaOH solution. If she puts only 1.00 mL of NaOH in the volumetric flask before bringing it up to volume, what will the concentration of the new solution be?

11. Stoichiometry and solution stoichiometry- 300
Determine the LR if 1.20 g of magnesium ribbon reacts with 0.97 g of oxygen gas. Write the balanced equation for this chemical reaction as well.

12. Stoichiometry and solution stoichiometry- 400
Determine the theoretical yield of silver chloride if 20.0 mL of 1.00 M silver nitrate reacts with excess sodium chloride solution.

13. Stoichiometry and solution stoichiometry- 500
Ethane gas (C2H6) will combine with oxygen gas to form carbon dioxide and water vapor. If 7.80 grams of C2H6 is reacted with 5.20 grams oxygen gas, what is the percent yield of CO2 if 1.50 g of CO2 are produced experimentally?

14. Intra/Inter forces and dissolving- 100
Categorize each of the following as intermolecular or intramolecular forces.
-ionic bond of KBr
-hydrogen bonding between H2O and glycerin
-Temporary force of attraction between CCl4 molecules
-Polar covalent bond in NH3

15. Intra/Inter forces and dissolving- 200
Explain how the phrase “like dissolves like” relates to intermolecular forces, and describe how soluble ionic salts dissolve in water.

16. Intra/Inter forces and dissolving- 300
Explain why dissolving is a physical change only, and explain whether each of the following compounds would be soluble in water. Ethanol is on the left, dichloromethane on the right.

17. Intra/Inter forces and dissolving- 400
Identify the cation and anion that each of the following salts would dissolve into when put in water.
(NH4)2SO4
NaHCO3
KCl

18. Intra/Inter forces and dissolving- 500
Determine which molecule in each of the following pairs would have a higher boiling point
CH4, CH3CH2CH2CH3
H2S, H2O

19. Molarity and freezing point depression - 100
Determine the molarity of a solution that was made in a mL volumetric flask with mol of NaOH.

20. Molarity and freezing point depression - 200
Determine the mass (g) of xylitol in a saturated xylitol solution.
Erythritol
Xylitol
Mannitol
Sorbitol
Maltitol
Isomalt
Lactitol
Sucrose
Carbon n° 4 5 6 12
Molecular Weight
122
152
182
344
342
Melting Point (°C)
121 94
165 97
150
190
Glass Transition Temp (°C)
-42
-22
-39 -5 47 34 33 52
Heat of Solution (kcal/kg)
-43
-36.5
-28.5
-26
-18.9
-9.4
-13.9
-4.3
Heat Stability (°C)
>160
<150
Acid Stability pH
2-10
>3
hydrolyses
Solubility ww% (25°C) 36 66 18 72 60 28 58 67
Hygroscopicity
Very Low
Low
High
Medium

21. Molarity and freezing point depression - 300
Explain how freezing point depression works on a molecular level. You can use NaCl as an example of a solute.

22. Molarity and freezing point depression - 400
You have a 0.45 M solution of HCl. How many g of HCl are in 57.5 mL of this solution?

23. Molarity and freezing point depression - 500
What is the molarity of mL of saturated sucrose solution that contains mL dH2O?
Erythritol
Xylitol
Mannitol
Sorbitol
Maltitol
Isomalt
Lactitol
Sucrose
Carbon n° 4 5 6 12
Molecular Weight
122
152
182
344
342
Melting Point (°C)
121 94
165 97
150
190
Glass Transition Temp (°C)
-42
-22
-39 -5 47 34 33 52
Heat of Solution (kcal/kg)
-43
-36.5
-28.5
-26
-18.9
-9.4
-13.9
-4.3
Heat Stability (°C)
>160
<150
Acid Stability pH
2-10
>3
hydrolyses
Solubility ww% (25°C) 36 66 18 72 60 28 58 67
Hygroscopicity
Very Low
Low
High
Medium