AP Chemistry Midterm Review - Answer Key Multiple

AP Chemistry Midterm Review - Answer Key Multiple Choice 1. C

28. D

2. B

29. A

3. A

30. C3H4 (sorry, the correct answer wasn’t on the actual review).

4. D 5. A 6. C 7. B 8. B 9. B 10. A 11. D 12. B 13. B 14. B 15. C 16. C 17. B 18. C 19. A 20. D 21. C 22. B

31. D 32. C 33. C 34. A 35. A 36. D 37. A 38. C 39. B 40. D 41. A 42. D 43. C 44. A 45. D 46. B 47. A 48. D

25. D

49. A *Sort of a trick question, as it is an exception to our expected electron configuration (which would have been [Kr]5s24d9). I don’t plan on asking this tricky sort of question on the midterm.

26. B

50. D

23. D 24. A

27. B

51. C

56. E

52. E

57. A

53. B

58. D

54. D

59. A

55. D

60. D

Free Response 1. (a) 741 torr

(d) 7.15 %

(b) 0.00731 moles O2

(e) -1, 0

(c) 0.497 g H2O2 2. Ignore this question. We aren’t there yet. My bad. 3. (i) 0.6116 g C

(iv) C4H5N2O

(ii) .3564 g N

(v) C8H10N4O2

(iii) 0.2031 g O 4. (a) 8s1 (b) Metal; similar electron configuration to other group 1 alkali metals, would lose 1 electron easily which is a property of a metal. (c) Largest; greatest number of energy levels. (d) Smallest; has the most nuclear shielding so nuclear attraction will be less, therefore less energy is needed to remove outer electron. (e) +1 (f) Q + 2H20  Q+ + 2OH- + H2 (g) Something (i) Ignore this question. We aren’t there yet. My bad. (ii) Q2O (iii) Soluble; all other group 1 compounds are soluble per the solubility rules.