Unit 10: Alkyl Halides

31. The solvent that favors SN1 reactions is typically:

a) Aprotic
b) Polar protic
c) Non-polar
d) Aqueous
Answer: b) Polar protic

32. In an elimination reaction, the major product is typically:

a) The least substituted alkene
b) The most substituted alkene
c) The least stable alkene
d) The least reactive alkene
Answer: b) The most substituted alkene

33. The reagent used to test for the presence of chlorine in an alkyl halide is:

a) Silver nitrate
b) Sodium iodide
c) Sodium bromide
d) Sodium sulfate
Answer: a) Silver nitrate

34. The rate of an SN2 reaction is affected by:

a) The concentration of the nucleophile
b) The size of the leaving group
c) The solvent polarity
d) The presence of a carbocation intermediate
Answer: a) The concentration of the nucleophile

35. The reagent used for the conversion of alkyl halides to alcohols is:

a) Sodium chloride
b) Sodium carbonate
c) Sodium hydroxide
d) Sodium bromide
Answer: c) Sodium hydroxide

36. The term “steric hindrance” refers to:

a) The effect of the leaving group
b) The effect of the solvent
c) The impact of bulky groups on the reaction rate
d) The stability of the carbocation
Answer: c) The impact of bulky groups on the reaction rate

37. The process of forming a halogenated alkane from an alkene is known as:

a) Addition reaction
b) Substitution reaction
c) Elimination reaction
d) Hydrogenation
Answer: a) Addition reaction

38. The major product of the reaction between an alkyl halide and a strong base is:

a) An alcohol
b) An alkene
c) An alkane
d) A haloalkane
Answer: b) An alkene

39. The process of forming alkyl bromides from alcohols involves the use of:

a) Hydrobromic acid
b) Sulfuric acid
c) Sodium chloride
d) Sodium carbonate
Answer: a) Hydrobromic acid

40. The most reactive halogen in nucleophilic substitution reactions is:

a) Fluorine
b) Chlorine
c) Bromine
d) Iodine
Answer: d) Iodine