1 / 39

4/17/2012 Standards : 7 (Chemical Thermodynamics) Ob jectives :

4/17/2012 Standards : 7 (Chemical Thermodynamics) Ob jectives : ● Be able to calculate Specific Heat Problems involving use of J/gºC D O NOW : 1. Vocab words on p. 489 – write definitions and explain as best you can H OMEWORK : 1. SN Ch 16.1 p. 216-218 (2 pts) Std 7

mada
Download Presentation

4/17/2012 Standards : 7 (Chemical Thermodynamics) Ob jectives :

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 4/17/2012 Standards: 7 (Chemical Thermodynamics) Objectives: ● Be able to calculate Specific Heat Problems involving use of J/gºC DO NOW: 1. Vocab words on p. 489 – write definitions and explain as best you can HOMEWORK: 1. SN Ch 16.1 p. 216-218 (2 pts) Std 7 2. Ch 16.1 PP's p. 492 & 494 PP's 1-6 (show calcs, do not use formula in book) (3 pts) Std 7 3. Watch all 4 videos in #3. Problems 4 & 5 worked out in detail. 4. You may want to watch the conductivity demo I did last week at the link in #4 of HW page =========================================================== STAMPS:   NONE Specific Heat

  2. Textbook p. 492 Table of Specific Heat for several elements

  3. Density - Problem Types (3) 1 2 3

  4. Specific Heat - Problem Types (4) 1 2 3 4

  5. Starting fraction if we are finding J Starting fraction if we are finding g or deg C

  6. RESPONDERS 4/18/2012 Standards: 9 (Chemical Equilibrium) Objectives: ●  Be able to calculate problems using specific heat without the formula q = c x m x ΔT ● Energy of Activation keeps most reactions from being spontaneous (thermite). ● Catalysts lower the energy of activation (vid. energy req'd to start reaction). ● Be able to write equilibrium expression for reactions. DO NOW: 1. What do each of the letters mean in this equation? q = c x m x ΔT see p 493 2. Define joule (J), calorie (cal), heat, chemical potential energy HOMEWORK: 1. Ch 18.1, PP's p. 565-568 1 (a-c), 2 (a-c), 3, 4 (2 pts) Std 9 Ch 18.1 Assess, p. 591 52 (a-b), 53 (a-b), 55, 56 (3 pts) Std 9 2. CST 80-90 (non-calc probs - correct ans, reason, p. #, calc probs show given, find and calcs (5 pts) Std MISC ========================================================= STAMPS:   ●  Journal 4/17 1. SN Ch 16.1 p. 216-218 (2 pts) Std 7 2. Ch 16.1 PP's p. 492 & 494 1-6 (3 pts) Std 7 Staple all papers Please

  7. CST Released Questions - on-line interactive print Both links on today's HW page http://www.sciencegeek.net/Chemistry/taters/CST.htm http://mrwiggersci.com/chem/TestsQuizes/CST-prep/ STAR-chem-2010.pdf

  8. big CAL also know as kcal

  9. mass volume density = if find = mass if find = volume volume mass mass volume start calc with this start calc with this

  10. 1 The find is _____________ What will start your calc. ? mass volume A volume mass B density problems

  11. J g°C specific heat = if find = g if find = °C If find = J J g°C start calc with this g°C J start calc with this

  12. J g°C specific heat = if find = g if find = °C If find = J J g°C start calc with this g°C J start calc with this 2 Where will the 2.15 be? A Top B Bottom

  13. 3 The find is _______ . Which will start you calc? J g°C A g°C J B

  14. aA + bB cC + dD ------> ------> [C]c [D]d Keq = [A]a [B]b

  15. Guided Practice Write Keq equilibrium constants for these equations __SO3(g) + __CO2(g) ------> __CS2(g) + __O2 (g) Keq = __C(s) + __H2O(g) ------> __CO(g) + __H2 (g) Keq = __FeO(s) + __CO(g) ------> __Fe(s) + __CO2 (g)

  16. 4/19/2012 Standards: 9 (Chemical Equilibrium) Objectives: ● Equilibrium Reactions are reversible ● Be able to write KeqEXPRESSIONS ● How to calculate the numerical value of Keq ● hetero- vs homogeneous equilibria DO NOW: ( use handouts to find answers to these ) 1. How do we define chemical equilibrium? What is it’s stylized equation/ equilibrium expression? (yesterday's handout, 2nd page at top) 2. What does homogeneous equilibrium mean (today's handout)? HOMEWORK: 1. CST 1-10 (5 pts) Std: MISC if no calcs needed give page# from book and brief explanation. For non calc, if great explanation, no page # not required. 2. Ch 18.1 Assess p. 568 6,7,9 Ch 18.2 Assess p. 574 10, 11 (a-c), 12 (a-c), 13 (an exothermic reaction where heat is a product) (a-c) ========================================================= STAMPS: ●  Journal 4/18 1. Ch 18.1, PP's p. 565-568 1 (a-c), 2 (a-c), 3, 4 (2 pts) Std 9 Ch 18.1 Assess, p. 591 52 (a-b), 53 (a-b), 55, 56 (3 pts) Std 9 2. CST 80-90 (non-calc probs - correct ans, reason, p. #, calc probs show given, find and calcs (5 pts) Std MISC BASKET BLACK TRAY

  17. 4 The find is _______ . Which will start you calc? J g°C A g°C J B

  18. J g°C specific heat = if find = g if find = °C If find = J J g°C start calc with this g°C J start calc with this Specific Heat = 5 Where will the 2.15 be if find? ____________ A Top B Bottom

  19. aA + bB cC + dD ------> ------> [C]c [D]d Keq = [A]a [B]b

  20. Interactive Applet to view for yourself what happens during equilibrium shifts (link in HW page tonight. http://www.mhhe.com/physsci/chemistry/essentialchemistry/flash/lechv17.swf

  21. Guided Practice Write Keq equilibrium constants for these equations __SO3(g) + __CO2(g) ------> __CS2(g) + __O2 (g) Keq = __C(s) + __H2O(l) ------> __CO(g) + __H2 (g) Keq = __FeO(s) + __CO(g) ------> __Fe(s) + __CO2 (g)

  22. 4/20/2012 Standards: 9 Objectives: ● Review HW, Keq expression, and figuring value of Keq ● LeChatelier - factors that cause “stress” to equilibria - conc., pressure, & temp. DO NOW: 1. Zumdahl Equilib. probls (handout): 26 (a-c) answer on your own paper. HOMEWORK: 1. Zumdahl Equilib. probls (handout): 35 (a-c), 36 (a-e) (5 pts) Std 9 2. CST problems 11-20 (5 pts) Std 9 ==================================================== STAMPS:   ●  Journal 4/19 1. Ch 18.1 Assess p. 568 6,7,9 Ch 18.2 Assess p. 574 10, 11 (a-c), 12 (a-c), 13 (a-c) (an exothermic reaction where heat is a product) 2. CST 1-10 (5 pts) Std: MISC BASKET BLACK TRAY

  23. Starting today Journals Write date to left of the "margin line" on your paper ----- penalty - no stamp Homework Write problem # to the left of the "margin line". If there are a, b, c, etc parts of the problem, write those to the left of the "margin line" ----- penalty - 1/2 credit for HW

  24. 4/26 (next week) Starts 7:00pm

  25. [N2] [Br2]3 [NBr3]2 Keq =

  26. Demo equilibrium CoCl2 (aq) CoCl42-(aq) <===========> Co2+(aq) + 4Cl1-(aq) PINK BLUE

  27. Problems 26 (a-c), 33 (a-c) & 34 (a-c) of "Equilibrium Probs from Zum Text". Problem 26 - follow directions in the problem for a-c. Do these problems on the "LeChat Prob form for ans" (2nd printer icon). Problems 33 and 34 you must use the chart "LeChatelier Problems - format for answers"

More Related