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REVIEW FOR TEST

REVIEW FOR TEST. Ch 14,15,16 and more !. Which of the following solutions will have the lowest pH?. 0.10 M NaCl 0.10 M CuCl 2 0.10 M K 3 PO 4 0.10 M Na 2 CO 3 0.10 M AgCl. answer. B. Phenol, C 6 H 5 OH, has a pKa of 10. What is the pH of a 0.010M solution of phenol? . 2 Between 3-7

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REVIEW FOR TEST

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  1. REVIEW FOR TEST Ch14,15,16 and more!

  2. Which of the following solutions will have the lowest pH? • 0.10 M NaCl • 0.10 M CuCl2 • 0.10 M K3PO4 • 0.10 M Na2CO3 • 0.10 M AgCl

  3. answer • B

  4. Phenol, C6H5OH, has a pKa of 10. What is the pH of a 0.010M solution of phenol? • 2 • Between 3-7 • 7 • Between 7-10 • 10

  5. answer • B

  6. What is the rate law for the following reaction mechanism? Step 1: A + B2 AB + BStep 2: AB + A  A2B (slow)What is the overall reaction?

  7. answer • Rate = k[A]2[B2] • 2A + B2 A2B + B

  8. The pH of a solution that is created by adding 10. mL of 0.002M KOH to 10. mL of distilled water is closest to: • 12 • 11 • 10 • 4 • 3

  9. answer • B

  10. Which of the following is the strongest acid? • HOAc (Ka = 1.8 x 10-5) • HCHO2 (Ka = 1.8 x 10-4) • HClO (Ka = 3.0 x 10-8) • HF (Ka = 6.8 x 10-4) • H2PO4- (Ka = 6.3 x 10-8)

  11. answer • D

  12. The conjugate base of HSO4- is • Hydroxide ion • Sulfuric acid • Sulfate ion • hydrogen sulfate ion • Sulfurous acid

  13. answer • C

  14. Which of the following will have a pH of 7 at 25 degrees Celsius? • KNO3 • NH4Cl • FeCl3 • I only • II only • III only • I and II only • I, II and III

  15. answer • A- I only

  16. Which of the following aqueous solutions has the highest [OH-]? • A solution with a pH of 3 • A 1x10-4 M solution of HNO3 • A solution with a pOH of 12 • Pure water • A 1 x 10-3 M solution of NH4Cl

  17. answer • D- pure water

  18. For the reaction 2A + B  C, the following data was obtained. Calculate the rate law, and give the units of k.

  19. answer • Rate = k[A][B] • Units of k = M-1 sec-1

  20. Which of the following has the highest freezing point? • 0.20 m glucose • 0.20 m ammonium bromide • 0.20 m zinc sulfate • 0.20 m potassium oxide • 0.20 m aluminum phosphate

  21. answer • A- glucose (Van hoft factor of 1)

  22. Which of the following will cause more products to be formed for the combustion of methane? (assume all products are gases) • Increasing the temperature • Increasing the volume • Decreasing the volume • Removing oxygen • Removing water vapor

  23. answer • E

  24. Which of the following can affect the rate of a reaction? • The temperature • The orientation of molecules • The number of collisions occurring • I and II • II and III • I and III • I, II, and III • Only III

  25. answer • D

  26. The hydride ion (H-) is a very strong base. The product(s) of the reaction of hydride ion in water is/are: H3O+ 2OH- H2 and OH- H2 and H3O+ H3O+ and OH-

  27. answer • C

  28. Which of the following rankings is correct regarding the pH of the following aqueous solutions? • 0.01 M K3PO4 • 0.01 M HClO4 • II. 0.01 M NH4NO3 • II > I = III • I>III>II • II>III>I • I = III > II • III = II >I

  29. answer • B

  30. Calculate the pH of a 0.163 M solution of sulfurous acid. (Ka1= 1.7 x 10-2, Ka2 = 6.4 x 10-8). Calculator allowed.

  31. answer • 1.35 (only have to do once ice box because Ka’s are far enough apart so that the pH won’t be affected by the second ionization)

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