The reaction of bromoethane with sodium acetate affords the substiution product

Question

The reaction of bromoethane with sodium acetate affords the substiution product methyl acetate what is the effect of doubling the concentration of sodium acetate on the rate of the reaction? the rate remains the same. the rate decreases by a factor of 2. the rate increase! by a factor of 2. the rate increases by a factor of 4. the reaction of tert - butyl bromide. (CH_3.3 CBr, with ethanol affords the substitution product tert - butyl ethyl ether. (CH_3-3 COCH_2 CH_3, in acidic conditions. What would happen to the rate of the reaction if the concentration of ethanol was doubled? the rate remains the same. the rate decreases by a factor of 2. the rate increases by a factor of 2. the rate increases by a factor of 4. the reaction of I -bromobutane with sodium hydroxide affords the substitution product l-butanol. What would happen to the rate of the reaction if the concentration of both I-bromobutane and sodium hydroxide were doubled? the rate remains the same. the rate decreases by a factor of 2. the rate increases by a factor of 2. the rate increases by a factor of 4. Which of the following statement about S_N2 reactions is true? the rate of reaction is dependent on just the substrate. the fastest reaction will occur with a tertiary alkyl halide.The mechanism is a two-stop process. Displacement occurs with inversion of configuration. Which of the following statement about an EI mechanism is not true? lt is a two-step process and has the same first step as an S_Nl mechanism. It involves the formation of a carbocation from eliminating a good leaving group. A common competing reaction is rearrangement of a less stable carbocation to a more stable carbocation the loss of a proton by the carbocation is a slow step. How many unique bita carbons are found in the alkyl halide below? 1 2 3 4 Which of the following statements about the mechanism of an E2 reaction is true? All bonds are broken and formed in multiple steps. the reaction is not concerted. Entropy favors the reactants of an E2 reaction. Entropy favors the products of an E2 reaction.

Explanation / Answer

12. C

Reason : Since bromo ethane is a primary alkyl halide it follows SN2 substitution mechanism hence concentration of nucleophile effects the rate of reaction directly.hence rate increases by 2 times.

13. A

Reason : since it TertiaryAlkylhalide its substitution follows SN1 mechanism hence concentration of nucleophile does not effect the rate of reaction

14. D

Reason: SN2 mechanism depends on concentration of alkylhalide and nucleophile

15. D

16. D

17. C

18. C

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