Covalent bond fission homolytic and heterolytic species stability electrophiles nucleophiles and common reaction types - Question Bank
1. Which type of cleavage is more common in polar protic solvents?
2. Which type of cleavage is more common in non-polar solvents?
3. The stability of a molecule or ion is inversely proportional to its:
4. A species that can act as both an electrophile and a nucleophile is:
5. Which of the following is a common type of reaction in organic chemistry?
6. The stability of resonance structures is related to the:
7. Which of the following is an example of a nucleophilic addition reaction?
8. Which of the following is an example of an electrophilic aromatic substitution reaction?
9. Which factor contributes to the stability of a free radical?
10. A species with a negative charge and a complete octet is generally:
11. A species with a positive charge and a complete octet is generally:
12. The breaking of a bond where both electrons go to one atom is called:
13. Consider the reaction: R-OH + H+ → R-OH2+. What is the role of H+?
14. Consider the reaction: CH3Cl + OH- → CH3OH + Cl-. What is the role of OH-?
15. Which type of species is typically a Lewis base?
16. Which type of species is typically a Lewis acid?
17. The stability order of tertiary, secondary, and primary carbanions is:
18. The stability order of tertiary, secondary, and primary carbocations is:
19. Which of the following is a characteristic feature of nucleophilic substitution reactions?
20. The reaction of methane with chlorine in the presence of sunlight is an example of:
21. A reaction where the carbon skeleton of a molecule is rearranged is called a:
22. In a substitution reaction, one atom or group is replaced by another. This can be initiated by:
23. Which type of reaction involves the removal of atoms or groups from adjacent carbon atoms?
24. The reaction of an alkyl halide with a strong base like KOH is typically an example of:
25. The reaction of an alkene with Br2 in CCl4 is an example of which type of reaction?
26. Which of the following is NOT a nucleophile?
27. Which of the following is NOT an electrophile?
28. A nucleophile can be:
29. An electrophile can be:
30. Hyperconjugation is most significant in stabilizing:
31. Hyperconjugation is a stabilizing effect that involves:
32. Which of the following species is stabilized by resonance?
33. Resonance stabilization generally leads to:
34. Which of the following free radicals is the most stable?
35. Free radicals are stabilized by:
36. Which of the following carbanions is the most stable?
37. Stability of carbanions generally increases with:
38. Which of the following carbocations is the most stable?
39. Stability of carbocations generally increases with:
40. Consider the species R-Br. If treated with a Lewis acid like AlBr3, this bond might undergo heterolytic cleavage. What is likely formed?
41. Consider the species R-Br. Under UV light, this bond undergoes homolytic cleavage. What is formed?
42. Which of the following is a common nucleophile?
43. Which of the following is an example of an electrophile?
44. A species that donates an electron pair to form a covalent bond is called a:
45. What term describes a species that accepts an electron pair to form a covalent bond?
46. Which of the following is a characteristic of homolytic cleavage?
47. In heterolytic cleavage of a C-X bond (where X is more electronegative than C), which species will carry the negative charge?
48. Which type of bond cleavage results in the formation of two neutral radicals, each with an unpaired electron?
49. What type of bond cleavage occurs when a shared pair of electrons goes entirely to one of the bonded atoms?