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

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

4. Density - Problem Types (3) 123123

5. Specific Heat - Problem Types (4) 12341234

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

7. 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 RESPONDERS Staple all papers Please

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

9. also know as kcal big CAL

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

11. 1The find is _____________ What will start your calc. ? A B mass volume mass density problems

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

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

14. 3The find is _______. Which will start you calc? A B J g°C J

15. aA + bB cC + dD------> K eq = [A] a [B] b [C] c [D] d

16. Guided Practice Write K eq equilibrium constants for these equations __C (s) + __H 2 O (g) ------> __CO (g) + __H 2 (g) __FeO (s) + __CO (g) ------> __Fe (s) + __CO 2 (g) K eq = __SO 3(g) + __CO 2(g) ------> __CS 2(g) + __O 2 (g)

17. 4/19/2012 Standards: 9 (Chemical Equilibrium) Objectives: ● Equilibrium Reactions are reversible ● Be able to write K eq EXPRESSIONS ● How to calculate the numerical value of K eq ● 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

18. 4The find is _______. Which will start you calc? A B J g°C J

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

20. aA + bB cC + dD------> K eq = [A] a [B] b [C] c [D] d

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

23. Guided Practice Write K eq equilibrium constants for these equations __C (s) + __H 2 O (l) ------> __CO (g) + __H 2 (g) __FeO (s) + __CO (g) ------> __Fe (s) + __CO 2 (g) K eq = __SO 3(g) + __CO 2(g) ------> __CS 2(g) + __O 2 (g)

26. BLACK TRAY 4/20/2012 Standards: 9 Objectives: ● Review HW, K eq expression, and figuring value of K eq ● 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

27. 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

28. 4/26 (next week) Starts 7:00pm

29. K eq = [N 2 ] [Br 2 ] 3 [NBr 3 ] 2

32. Demo equilibrium CoCl 2 (aq) CoCl 4 2- (aq) Co 2+ (aq) + 4Cl 1- (aq) BLUE PINK

38. 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"