The rate law foe the following reaction is CH_3CH_2CH_2CI + NaCN DMSO_rightarrow
ID: 526762 • Letter: T
Question
The rate law foe the following reaction is CH_3CH_2CH_2CI + NaCN DMSO_rightarrow A) rate = k[CH_3CH_2CH_2CI] B) rate = k[CH_3CH_2CH_2CI][NaCN]. C) rate = k[CH_3CH_2CH_2CI][NaCN]^2. D)rate = k[NaCN]. In which of the solvents below would the reaction shown take place at the fastest rate? CH_3CH_2CH_2CH_2Br + NaNC rightarrow CH_3CH_2CH_2CH_2CN + NaBr A) ethanol B) acetic acid C) dimethyl sulfoxide D) water What is the me limiting step in the following reaction? (CH_3)_3CCI + H_2O rightarrow (CH_3)_3COH + HCI A) (CH_3)_3C^+ + H_2O rightarrow (CH_3)_3C^+ + C I B) (CH_3)_3C^+ + H-2O rightarrow (CH_3)_3C-OH^+_2 C) (CH_3)_3C-OH^+ _2 + H_2O rightarrow (CH_3)_3COH + H_3O^+ D) H_3O^+ CI rightarrow HCI + H_2O Which alcohol below would undergo acid catalyzed dehydration most readily?Explanation / Answer
19) option B is correct
Explanation: reaction of primary alkyl halide with a strong nucleophile, NaCN is SN2 mechanism and the rate of reaction invovles concentration of both alkyl halide and nucleopphile.
20) option C is correct
Explanation: SN2 reaction is favourable in aprotic solvents.
21) option A is correct
Explanation: formation of carbocation is a rate limiting step in SN1 reactions.
22) option D is correct
Explanation: dehydration of alcohol involves Sn1 mechanism which invovles formation of carbocation as an intermediate. so the structure which leads to the formation of more stable carbocation is most reactive in acid catalyzed dehydration.
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