Chemistry 1 (San Marino High School)

Due: 12/19/2016

Mon, 19 Dec 2016 17:20:49 PST

For reference

1. The front page of the dark blue review sheet (not due until after enthalpy is covered in second semester) is for stoichiometry, which includes

a. % comp to empirical/molecular formulas

b. mole-to-mole ratio

c. % yield

d. limiting reactants

2. The final review practice is not collected. Answers posted later; practice getting an answer instead of backward-engineering the reason behind an answer.

a. For question 7, use 2.70 g/cm³ for aluminum's density.

b. For question 8, use 0.92 g/mL for ice's density.

c. For question 10, use 0.0923 cal/(g x degree Celsius) for copper's specific heat capacity.

d. For question 16, use 1.00 cal/(g x degree Celsius) for water's specific heat capacity.

d. For question 50f, use metal chlorate --> metal chloride + oxygen

3. Once upon a time, you memorized many things:

a. prefixes (kilo, deci, centi, milli, micro, nano)

b. D = m/V

c. q = mC(delta T)

d. Elements/Symbols (pink sheet)

e. Conservation of mass and energy

f. 1s²2s²2p⁶3s²3p⁶... (think apartment complex sheet)

g. ROYGBIV and the EM spectrum

h. Atomic/ionic radius, ionization energy, and electronegativity trends

i. Charges for monoatomic and polyatomic ions

j. Chemical equation subtypes

k. Avogadro's # and 22.4 L

l. % yield = actual/theoretical masses x 100%

m. Rules for each category of significant figures and naming/formulas

n. VSEPR

o. Electronegativity ranges for bond types

p. Celsius <--> Kelvin conversion (+/- 273.15)

KEY

1. 1.4E7 nm, 1600 g, 0.15 cubic meters, 1.9E4 mL, 1.5 L, 926 mi/hr

2. 4, 1, 4, 2

3. 147, 0.21, 5.7E10

5. 1 m = 10 dm; 1 m = 100 cm; 1 m = 1000 mm; 1 m = 1E6 micrometers; 1 m = 1E9 nm; 1 m = 1E-3 km or 1000 m = 1 km

6. 19 g/mL

7. 17000 cubic cm Al

8. 5800 g

10. 1.0E3 cal

15. 0.160 g oxygen

16. 0.17 cal/(g x degree C)

22. 92 protons, 146 neutrons, 92 electrons

23. 12 protons, 14 neutrons, 10 electrons

25. 28.11 amu

26. 4, 10, 2, 32

28. 1s²2s²2p⁶3s²3p²; 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²

29. [Kr-36]5s²4d¹⁰5p⁵; [Xe-54]6s²4f¹⁴5d⁹

30. 4, 2

32. +2, -3

33. Pd

34. Cr & Fe

35. iodine

36. Mg

37. As, Pt

38. P, Br

39. F, Al

40. Se, C

41. SO_2, CO₂, SiBr₄

42. hydrochloric acid; chlorous acid; perchloric acid; potassium sulfide; iron (III) oxide; copper (II) iodide; nickel (III) sulfate; silver nitrate; sodium acetate; sulfur trioxide

43. H₂S; H₂SO₄; H₂SO₃; Mg₃N₂; Au(NO₂)₃; CoBr₃; Zn₃(PO₄)₂; XeF₄

44. 63.55 g/mol Cu; 199.88 g/mol CaBr₂

45. 0.157 mol Cu; 2.2E23 molec CO₂; 3.6E22 f.un Ag₂S; 2.0 L O₂

46. 35.00% N

47. 3.17 g/L

48. Cl₂O₇

49. C₄H₅O₂

50. 3Mg + N₂ --> Mg₃N₂; 2HgO --> 2Hg + O₂; H₂SO₄ + 2KOH --> 2H₂O + K₂SO₄; Mg + NiCl₂ --> MgCl₂ + Ni; Cl₂ + 2NaI --> 2NaCl + I₂; 2KClO₃ --> 2KCl + 3O₂; 2AgNO₃ + Na₂CO₃ --> Ag₂CO₃(s) + 2NaNO₃

51. 0.750 mol HCl; 0.230 g H₂; 137 g AlCl₃

52. 98.8%

53. Fe limits, 5.72 g Fe₂O₃ form, 0.28 g O₂ remain

54. -58.9 kJ, exothermic

55. 618 kJ

58. 2

59. trigonal pyramid (107 degrees); bent (120 degrees); square planar (90 degrees)

60. NaI is ionic; P-Br (partial + for P, partial - for Br); C-F (partial + for C, partial - for F); Cl-Br is nonpolar

61. PCl₃, SO₂

Due: 12/15/2016

Wed, 14 Dec 2016 13:13:36 PST

Finish "Limiting Reactant" Lab for basket tomorrow.

Due: 12/14/2016

Mon, 12 Dec 2016 18:27:51 PST

Finish "Limiting Reactant" WS.

Check answers:

1. NaOH (0.0628 mol NaOH < 0.0656 mol H₂SO₄)

2. HCl (0.0952 mol HCl < 0.101 mol Mg(OH)₂)

3. 12.1 g CrCl₃ produced with 0.14 g Cr left over

4. 17.0 g Fe

5. I₂O₅ (0.007910 mol I₂O₅ < 0.008674 mol SF₄)

6. 23.4 g H₂O produced with 11.7 g N₂O₄ left over

Due: 12/13/2016

Mon, 12 Dec 2016 18:11:32 PST

Finish stoich lab "Decomp of Sodium Bicarbonate" for basket.

Due: 12/12/2016

Fri, 09 Dec 2016 08:47:21 PST

Finish "Stoichiometry" WS.

Answers:

1. 3.75 mol O₂

2. 1.88 mol H₂

3. 272 mL HI

4. 50.0 L SO₂

5. 3.54 g S₈

6. 1.55 g C₆H₆

7. 106 g AlCl₃

8. 90.2 L H₂

9. 0.382 g Sb

10. 10.1 g Al

Due: 12/09/2016

Thu, 08 Dec 2016 09:35:55 PST

Final strikes on Double-Replacement due tomorrow if you picked up your Second Strike today after the quiz.

Due: 12/08/2016

Wed, 07 Dec 2016 11:59:56 PST

Set date

Unit 5 "Test" (not as hefty due to previous quiz)

Chemical Reactions & The Mole

Orange review sheet due

Major Topics

1. Predicting Products of chemical reactions (synthesis, decomposition, single replacement, double replacement, combustion)

2. Mole conversions (involving volume in Liters; particles in atoms, ions, molecules, and formula units; and mass in grams)

3. Density calculations using mass and volume (and vice versa)

**% composition, empirical and molecular formulas (along with Hydrate Lab) will be lumped into "Unit" 6 - Stoichiometry

KEY (put s,l,g,aq if solubility rules from SR/DR reactions can be applied)

1. 2Na(s) + Cl₂(g) --> 2NaCl

2. 2Al(s) + 6HCl(aq) --> 3H₂(g) + 2AlCl₃

3. MgO(s) + H₂O(l) --> Mg(OH)₂(s)

4. CH₄(g) + 2O₂(g) --> CO₂(g) + 2H₂O(g)

5. KCl(aq) + AgNO₃(aq) --> AgCl(s) + KNO₃(aq)

6. 2NaHCO₃(s) --> Na₂CO₃(aq) + CO₂(g) + H₂O(g)

7. 2.19x10²¹ f.un Pb(ClO₄)₂

8. 36.2 g C₄H₁₂N

9. 3.26 L He

10. 0.332 g H₂

11. 3.17 g/L Cl₂

12. 131 g/mol, Xe

13. Aluminum will react with 4 solutions (HCl, ZnSO₄, CuSO₄, AgNO₃). Mg>Al>Zn>H>Cu>Ag. Because aluminum (Al) is lower in the activity series than magnesium (Mg) and higher in the activity series than zinc (Zn), hydrogen (H), copper (Cu), and silver (Ag), then aluminum (Al) will undergo single replacement with zinc sulfate (ZnSO₄), hydrochloric acid (HCl), copper sulfate (CuSO₄), and silver nitrate (AgNO₃).

14. 2Al + 3H₂SO₄ --> 3H₂ + Al₂(SO₄)₃(aq)

15. Cl₂ + 2KI --> I₂ + 2KCl

16. Cu + FeS --> NR

17. 2Li + 2H₂O --> H₂ + 2LiOH(aq)

18. NaCl + Br₂ --> NR

19. Pb + H₂O --> NR

20. 2H₃PO₄ + 3Ca(OH)₂ --> 6H₂O(l) + Ca₃(PO₄)₂(s)

21. 2HC₂H₃O₂ + Ba(OH)₂ --> 2H₂O(l) + Ba(C₂H₃O₂)₂

22. 3Sr(NO₃)₂ + 2K₃PO₄ --> Sr₃(PO₄)₂(s) + 6KNO₃

23. (NH₄)₂CO₃ + 2AgNO₃ --> 2NH₄NO₃ + Ag₂CO₃(s)

24. Ni(NO₃)₃ + K₃PO₄ --> NiPO₄(s) + 3KNO₃

25. CuCl₂ + H₂S --> CuS(s) + 2HCl

Due: 12/07/2016

Tue, 06 Dec 2016 19:33:51 PST

Finish "Hydrate" lab for basket.

Due: 12/06/2016

Mon, 05 Dec 2016 16:10:17 PST

Finish "Empirical/Molecular Formulas" WS.

Check answers!

EF:

1. C₅H₁₀O

2. potassium permanganate

3. aluminum chloride

4. barium sulfate

MF:

1. Dicarbon dihydride

2. Diiodine pentoxide

3. C₅H₁₀O₂

4. H₂O₂ (hydrogen peroxide)

5. C₄H₁₂N₂

Due: 12/05/2016

Fri, 02 Dec 2016 07:51:12 PST

Finish Part 3 (stapled to data for basket) of "Double Displacement Reactions" Lab.