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Welcome to. WHO WANTS TO BE A MILLIONAIRE?. Opening Question. Chemistry is the study of …. Matter and the changes it undergoes. For $100. When a chemical system is at equilibrium, it can be described by all of the following EXCEPT. A) dynamic. B) forward rate = reverse rate.

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Welcome to...

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  1. Welcome to...

  2. WHO WANTS TO BE AMILLIONAIRE?

  3. Opening Question Chemistry is the study of …

  4. Matter and the changes it undergoes

  5. For $100 When a chemical system is at equilibrium, it can be described by all of the following EXCEPT A) dynamic B) forward rate = reverse rate D) static C) constant concentrations

  6. For $300 CO + Cl2 COCl2 K = 4.6 x 109 L/mol If the concentration of the product were to double, what happens to the equilibrium constant? A) doubles B) quadruples C) no change D) halves

  7. For $500 The formation of ammonia is exothermic. Which can be used to increase production of ammonia? A) increase temp B) increase volume C) add ammonia D) decrease temp

  8. For $800 For the formation of HI from its elements, Kp = 45.9 at 763 K At equilibrium the partial pressures of HI and H2 are 4.00 atm and 0.200 atm respectively. What is the partial pressure of I2? A) 0.200 atm • 1.74 atm C) 0.436 atm D) 0.574 atm

  9. For $1000 2A (g) + B (g)  C (g) 3.00 moles of A and 4.00 moles of B are placed in a 5.00 L container. At equilibrium [A] = 0.40 M. What is the value of K? A) 1.80 B) 2.00 C) 0.89 D) 3.00

  10. For $2000 Which is true for the dissociation of a weak acid? B) the equilibrium lies to the right A) Ka is large C) the CB is neutral D) the equilibrium lies to the left

  11. For $4000 What is the molarity of a HClO2 solution if the pH is 1.25? Ka = 1.10 x 10-2 A) 1.23 M B) 0.819 M C) 0.287 M D) 1.52 M

  12. For $8000 The pH of a 0.100 M weak monoprotic acid is 3.20. What is the value of Ka? A) 6.3 x 10-4 B) 4.0 x 10-6 C) 7.2 x 10-5 D) 3.2

  13. For $16,000 A solution of acid, HA, is 0.47% ionized. What is the value of Ka? A) 3.4 x 10-8 B) 6.9 x 10-6 • 2.2 x 10-3 D)3.8 x 10-2

  14. For $32,000 The conjugate acid and base of bicarbonate ion are, respectively: A) H2CO3 and CO3 2- B) H3O+ and OH- C) H3O+ and CO32- D) CO32- and OH-

  15. For $64,000 Calculate the pH of a 0.30 M NH4Cl solution. (NH3 Kb = 1.8 x 10-5) A) 4.89 B) 3.33 C) 9.11 D) 5.22

  16. For $125,000 Which factor is most important in determining the strength of an oxyacid? A) size of the molecule B) identity of the central atom C) number of oxygen atoms present D) ability to change atomic orientation

  17. For $250,000 Given 100.0 mL of a buffer that is 0.50 M HOCl and 0.40 M NaOCl, what is the pH after 10.0 mL of 1.0 M NaOH has been added? (Ka HOCl = 3.5 x 10-8) • 6.45 • 7.55 C) 6.64 D) 7.45

  18. For $500,000 Consider the titrations of equal volumes of 0.1 M HCl and 0.1 M CH3COOH with 0.1 M NaOH. Which of the following would be the same for both titrations? A) the initial pH B) the pH at the halfway point C) the pH at equivalence point D) the volume of NaOH needed to reach equivalence point

  19. For $1,000,000 What is the pH at equivalence point for the titration of 100.0 mL 0.250 M aniline (Kb= 3.8 x 10-10) with 0.500 M HCl? A) 11.62 B) 8.70 C) 5.23 D) 2.68

  20. CONGRATULATIONS! You’ve Just Won 1,000,000 DOLLARS !!!!

  21. 100 8,000 16,000 300 YES ! 32,000 500 64,000 800 125,000 1,000 250,000 2,000 500,000 4,000 1,000,000

  22. 100 8,000 16,000 300 I'm sorry, that's the wrong answer. 32,000 500 64,000 800 125,000 1,000 250,000 2,000 500,000 4,000 1,000,000

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