ApHomework2004

Semester Two

• Mon 5/2 Due: Wed 5/4
  • Do Reaction Set 8, to be collect next class. Please give me the type of chemical reaction (redox, precip, water as reactant,acid/base,etc.) before giving answer.
  • Redo Free Response portion of AP test.

Mon 4/25 Due 4/26

• [AP Review Set1:Electrochemistry]
• Reaction Set 7(not due until Fri 4/29)

April Vacation Homework (posted Sunday April 17 12:00 noon)

• Pg495 #31(and why), 36,79,84,93(use deltaH_vap=40.7KJ/mol)
• Pg542 #33(don't do normality),40,45
• Pg542 #47,50,63,65,72,73a,74

• Wed 4/13 Due: Thurs 4/14
• Read Section 10.8(Vapor Pressure), 10.9(Phase Diagrams),11.3(Henry's Law :Partitioning Constant) ,11.4 (Raoult's Law)
  

• Fri 4/7 Due: Tues 4/11
  • Go to [Bonding Review Homework]
    
• Mon 4/4 Due:Tues 4/5
  
  • Complete Table of Lewis Dot Structure
  • Read (do not take notes but need to read or you will be lost) Section 9.1 (Pg407-420)
    

• Tues 3/29 Due: Thurs 3/31
  • Work on Inclass work from last class (check out [AP Chem Bonding page])
• Mon 3/28 Due:3/29
• In class work:
  • Read & take notes on Section 8.1,8.2,8.6,8.7,8.9,8.10,8.11,8.12(No formal charge),8.13
  • Handouts from [Bonding Handouts]
• Homework:Quiz on Atomic structure
  

• Wed 3/23 Due Mon 3/28
  
  • Pg336 #51,87,94,115
  • Print out and Reaction set in Reaction Set 6

• Winter Break
  • Pg.592 #19,27,31,33,39
  • Two handouts (PE diagram, Method of Initial Concentration)
  • Read & supplement notes (from both handouts) Section 12.6-12.8.

• Tues 2/15 Due:Thurs 2/17
  • Complete Hess Law Lab including question sheet and put in lab book
  • Read and supplement notes on Section 12.1-12.3

• Mon 2/14 Due: Tues
  • As review Pg864 #31(25a),52,73,75
    • Pg818 #60,64,72(except b)
    • Pg 284 #82,90(except b)
    • Calculation for Hess' Law

• Fri 2/10 Due:Mon 2/14
• Pg865 #57,63

• Wed 2/8 Due:Fri 2/10
  • Pg816 #55,59
  • Read & take notes on Section 17.3,17.4

• Tues 2/7 Due:Wed 2/8
  • Pg814 #49,51,45b

• Fri 2/4 Due: Tues 2/7
  • Pg283 #77 [hint: it is a limiting reactant problem and uses deltaH_rxn,calorimetry,and stoichiometry (?limiting reactant problem?)]
  • Pg813 #17(b,c), 21, 33(b,c),37(b,c), 39

• Thurs 2/3 Due: Fri 2/4
  • Read & take notes on Section 16.4 & 16.6

• Wed 2/2 Due: Thurs 2/3
• Go to StandardHeatofFormation and Entropy

• Mon 1/31 Due: Wed 2/2
  • Study for Naming Cpd Quiz
  • Pg.280 #21,37,53
  • Read Hess' Lab
  • Read Section 6.4 (look at notes as reading)

END of Semester One

• Electrochemistry : Handout1
  • 4a. 13.2g Cr
  • 4b. 1.02A
  • 5. Anode: 2Cl^-1 ==> Cl₂ + 2e^-
  • Cathode: Co⁺² + 2e^- ==> Co_(s)
  • PartIII?, 1. Answer is Cd. Why: Looking for oxidation with highest +V (can't have Ag⁺ or Cd⁺² since they can't be oxidized)
  • 2. Group V is the Nitrogen Family (Column), all oxidation # of Group V elements in these cpds were +5 except KAsF?₄ where oxidation # of As is +3
  • 3. change of -2 in oxidation number of phosphorus

• Electrochemistry : Handout2
  • Direction of flow is always from anode to cathode (opposite flow through salt bridge)
  • Both electrodes are made from graphite or platinum
  • Cathode: IO₃^-1 + 5e^- + 6 H⁺¹ ==> 1/2I₂ + 3 H₂O E=1.20V (iodine is solide, acid needed for H⁺¹, IO₃^-1)
  • Anode:Fe⁺² ==>Fe⁺³ + 1e^- E=-0.77V(all ions are in solution)
  • Overall reaction: 2 IO₃^-1 + 10 Fe⁺² + 12 H⁺¹ ==> 5 Fe⁺³ + 1I₂ + 6 H₂O

• Electrochemistry : AP Question
  • a. Anode: 2Cl^-1 ==> Cl₂ + 2e^- Reason:Electroplating wants E_cell=-V, so either ion of iron will make a reduction (keep it negative E half cell), so chloride needs to be oxidized
  • b. 0.0187mole e^-/0.00933mole Fe = 2 so Fe⁺² + 2e^- ==> Fe is answer. Remember that the link between Amp & time and grams deposited is Faraday constant and the number of electrons needed to take the ion to the solid form.
  • c. Fe⁺² + 2 Cl^-1 ==> 1 Fe + Cl₂
  • d. 0.231L : need to get mole Cl₂ so you can use PV=nRT to get volume
  • e. 2.27 amps

• Solubility : AP Question
  • ai. Cu(OH)₂ ==> Cu⁺² + 2 OH^-1
  • aii. 1.76E-7M
  • aiii. K_sp = 2.20E-20
  • bi. 1.5E-7M, use pH to get [OH^-1]
  • bii. 3.1E-14M, remember to get how much has made solid and then do equilibrium w/common ion to get actual value

• Acid / Base II AP Question 1
  • Can't give answer, need to explain. Look at notes on shapes of titration curves (weak acid vs. strong acid) including locating equilivance pt, half-way point.

• Acid / Base II AP Question 2
  • a. K_a = ( [H⁺][N₃^-]) / ( [HN₃]
  • b. pH = 2.93
  • c. pH = 4.77 (Hint : we call this solution a buffer)
  • d. [OH^-1] = 3.5E-6M (Hint: you are titrating with strong base, it must be consumed by the weak acid at all cost. Problem basically tells you that you have more strong base than weak acid so that it will not be an equilibrium condition (buffer or at equilivance pt) after you do the stroichiometry (to try to get of all hydroxide.

LEO the lion goes GER and is a FAT CAT

FAT CAT- Flow of electrons goes from Anode To CAThode

• Tues 1/4 Due: Thurs 1/6
  • read & take notes on 17.1-17.2, 17.5,17.6
  • Pg863 #15a,16a,25a (and 27)

• Mon 12/20 Due: Tues 12/21
  • Class work :Pg770 #55,56,65 (put each question on separate sheet of paper)
  • HW: Pg770 #69,71
  • Handout Acid-Base Indicator Handout

• Fri 12/10 Due: Tues 12/14
  • Pg770 #61 & 63(do parts 4.0ml,12.5ml,25.0ml,25.1ml,28.0ml for both)

• Thurs 12/9 Due: Fri 12/10
  • Read Section 15.4
  • Outline page for Titrations

• Tues 12/7 Due: Thurs 12/9
  • Do "In-class Work on Buffer" Handout (will collect 1 of 2 pages)
  • Read Common Ion Handout (will do as lab in class)

• Mon 12/6 Due: Tues 12/7
  • Study for test

• Fri 12/3 Due: Mon 12/6
  • Read Section 15.1-15.3
  • Pg770 #23,39,43

• Wed 12/1 Due: Fri 12/3
  • Make sure to do one question per side of paper and graded work on different paper as Non-graded work
  • Graded HW: Pg700 #80a(&why),110a,115c(find pH if you have 0.10M of this salt),122a&c,133
  • Non-graded HW: Pg700 #64(calculate pH only),80b(&why),110b,121,136a(show why)

• Tues 11/30 Due: Wed 12/1
  • Complete pH calculation for Salt Lab and strong acid/weak acid
  • One Percent Dissociation and Acid mixture problems

• Tues 11/23 Due: Wed 11/24
  • Pg700 #31,79,103,107,109,111

• Mon 11/22 Due: Tues 11/23

• Read Section 14.8 (Hydrolysis of Salt) and look at Notes Handout
• Read Hydrolysis of a Salt Lab

• Thurs 11/18 Due: Mon 11/22
  • Do Pg700 #27,55,87(answer question and calculate concentration of all species at equilibrium)

• Wed 11/17 Due: Thurs 11/18
  • Read Section 14.5
  • Pg400 47,51

• Mon 11/15 Due: Wed 11/17
  • Read Conductivity Ionization Dissociation Lab
  • Read Section in Package and review package notes

• Tues 11/2 Due:Thurs 11/4
  • Study for Gas & Equilibrium AP test

• Mon 11/1 Due: Tues 11/2
  • Do explanation in LeCathelier?'s Principle Lab
  • Word on two AP Questions (Gas & Equilibrium)

• Wed 10/27 thru Mon 11/1 see the following for HW
  • Equilibrium

• Thurs 10/21 Due: Tues 10/25
• Pg 642 #49 and #53(try 5% rule here)

• Wed 10/20 Due: Thurs 10/21
  • (Gas Problem) Finish any problems with Gas homework
  • (Equilibrium) Read Section 13.1-13.6
    • Look/use handout
    • Still need to take other notes
    • Do #41 Pg461

• Mon 1018 Due:Wed 10/20
  • All gas package problem is due

• Fri 10/15 Due:10/18
  • Work on Gas HW package (will be DUE CLASS AFTER Tues 10/19)
  • Read next lab (Mass-Volume Lab)

• Wed 10/13 Due:Fri 10/15
  • Work on Gas HW package

• Tues 10/12 Due:Wed 10/13
  • Work on the homework stated in Gas Chapter

• Fri 10/8 Due Tues 10/12
• study for Ch4 test
• Bring in homework to be graded

• Wed 10/6 Due Fri 10/8
  • Pg184 #60a&b,62(pick one),78

• Tues 10/5 Due Wed 10/6
  • Read & take notes on Section 4.9-4.10 (AP Book)
  • If you need more help read Ch21 (1st year book)
  • Pg182 #53,57(a,b,c,e),59(a,d),61a

• Wed 9/29 Due 9/30
  • Non-graded Pg180 #19(d,e),27,43(one of them)
  • Graded Pg180 #20(a,c),30,40,50,51

• Wed 9/22 Fri 9/24
  • Do Pg186 #39
  • Make sure all labs are done (except mass-mass lab)
  • Tape/paste the precipitation lab (mass-mass lab)into lab
  • Make sure you have making a dilution & molar solution (both calulcation&direction)
  • On 2 page Reaction set HW. Do all 1st page and even on 2nd page

• Tues 9/21 Due: Wed 9/22
  • Work on two lab question handouts
  • Work on completing Zinc iodide lab
  • Read precipitation lab
  • If you have time, continue to memorize precipitation/solubility rules

• Mon 9/13 Due:Wed 9/15
  • Work on any unfinished lab work
  • Continue to memorize chemical formulas & naming compounds

• Fri 9/9 Due:Mon 9/13 (was absent sub gave HW)
  • Quiz on memorizing chemical formula & naming compounds

• Thurs 9/9 Due:Fri 9/10
  • Finish Homework#2 (if you did not finish before)
  • Work on two lab report write-up

• Tues 9/7 Due:Thurs 9/9
  • Quiz on memorizaring ions & naming compounds
  • Work on Homework Set#2 (DUE FRI 9/10)

• Fri 9/3 Due:Tues 9/7
  • Finish summer homework
  • Do calculations for Hydrate lab

• Wed 9/1 Due:Fri 9/3
  • Cover AP book
  • Pass in Summerwork (see me if can't get it done)
  • Work on memorizing naming cpds (including anion & cation)
  • Read Hydrate lab