c237_ch8_packet - reacr m a NU- via either an S N /E 1. or...

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1. Suppose that R-x reacr ma NU- via either an SN~ /E or an SN2 mechanism. State whether the rate of reaction by each pathway will be ma-eased. decre-aed, or left largely unchanged of the following cnangeS'h the way reactton is carried out (18 points). A. IncreAsing the concentration of Nu- . . Stq.1 1 SN2 B. Increasing polarltv solvent C. Changing R *om secondary -1 group to a tertiary dkyl group. Stql/El '
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1. ) The Eoorest leajlhg nou~ amongst the following will be 2. ) Which one of the following compounds will display the fastest reaction rate for reaction with halogen acid? 3. 1 The leavine moue involved durin~ the reaction shown on the right is 4- I) In which one of the following solvents would the reaction H,C-CH,-CH,-Br: + N~+ - :N, - (shown on the right) take place at the fastest rate? -- A) H,C-OH B) ~,~-coo~ C) (H,c),N-CH&: D) H,C-(cH,),-CH, E) H,O: (acetic acid) (dimethylformamidc or DMD 5. ) mat is the effect of doubling only the concentration of water for the following reaction? triples the rate B) doubles the rate C) no change D) quadruples the rate + H,O: ---3~ 'E) the rate is halved (2 points each). For each one ofthe following pairs of reactions, place the letter that corresponds to the faster reaction of the pair in the small blank provided on the left of that pair: D) (1 point pcr blank). Arrange the following comp.ounds in the correct 6rdei of their reactivity in an SN1 reaction. (I = fastest rate of reaction; 4 = slowest rate of reaction).
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E) (6 points each). Complete the following reactions by either
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c237_ch8_packet - reacr m a NU- via either an S N /E 1. or...

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