Which of the Following S_N2 Reactions Is the Fastest B)

question 33

Multiple Choice

Which of the following S_N2 reactions is the fastest?

• A) \(\mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { CH } _ { 2 } \mathrm { CH } _ { 2 } \mathrm { Br } + \mathrm { OH } ^ { - } \rightarrow \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { CH } _ { 2 } \mathrm { CH } _ { 2 } \mathrm { OH } + \mathrm { Br } ^ { - }\)
• B) \(\mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { CH } _ { 2 } \mathrm { CH } _ { 2 } \mathrm { Br } + \mathrm { H } _ { 2 } \mathrm { O } \rightarrow \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { CH } _ { 2 } \mathrm { CH } _ { 2 } \mathrm { OH } + \mathrm { HBr }\)
• C) \(\mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { CHBrCH } _ { 3 } + \mathrm { OH } ^ { - } \rightarrow \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { CHOHCH } _ { 3 } + \mathrm { Br } ^ { - }\)
• D) \(\mathrm { CH } _3 \mathrm { CH } _2 \mathrm { CHBrCH } _3 + \mathrm { H } _2 \mathrm { O } \rightarrow \mathrm { CH } _3 \mathrm { CH } _2 \mathrm { CHOHCH } _3 + \mathrm { HBr }\)

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Definitions:

Limbic System

A complex system of nerves and networks in the brain, involved in basic emotions such as fear and pleasure, as well as drives like those for food and sex.

Thalamus

A brain structure that acts as a relay station for transmitting sensory information to the cerebral cortex.

Hippocampus

A major component of the brain located in the medial temporal lobe, playing important roles in the consolidation of information from short-term to long-term memory and in spatial memory that enables navigation.

Remembering

The cognitive process of recalling information that has been previously learned or experienced.