Homework Answers
31)
The one with highest activation energy will be lowest.
Activation energy is energy difference between reactant and
activated complex.
This energy is largest in A
So, A is slowest.
Answer: A
32)
Let percentage of smallest enantiomer be x
%ee = 100 - 2*x
90 = 100 - 2*x
2*x = 10
x = 5 %
Other enantiomer would be 95 %
Answer: D
Only 1 question at a time please
Multiple Choice Identify the choice thar best completes the statement or answers the question. Use the...
Multiple Choice Identify the choice thar best completes the statement or answers the question. Use the alkyl bromides below to answer the following five questions: Br -Br CH3 Br IV 10. Which of the alkyl halides is most likely to participate in an SN2 reaction? a. II d. III b. IV e. V c. I 11. Compound II can be classified as a alkyl halide. e. I a. quaternary c. primary b. tertiary d. secondary 12. Which of the alkyl...
16. Which of the following is correct regarding Sy2 reactions of alkyl halides? A. Secondary halides...
16. Which of the following is correct regarding Sy2 reactions of alkyl halides? A. Secondary halides react faster than primary halides. B. Rate of reaction depends on the concentrations of the alkyl halide only. C. Favored in polar aprotic solvents D. Results in a racemic mixture
22. Which of the following structures has the Sconfiguration? CH2CH3 CH2CH3 HECCI ......CH н OH ну...
22. Which of the following structures has the Sconfiguration? CH2CH3 CH2CH3 HECCI ......CH н OH ну H2CH2C сна A) Only 1 B) Only II C) Only I and II D) I, II and III 23. Which of the following structures has the configuration? CH,CH, CH.CH OH ...CHHECH H HỊCHẠC \ D) I, II and III A) Only I B) Only II C) Only I and II 24. What is the relationship between the following compounds? OH om B) Diastereomers C)...
hich of the following statements about the reactions of alkyme A) The characteristic reactions of alkyl...
hich of the following statements about the reactions of alkyme A) The characteristic reactions of alkyl halides are addition and elimination B) The characteristic reactions of alkyl halides are addition and substitution C) The characteristic reactions of alkyl halides are elimination and substitution D) The characteristic reactions of alkyl halides are oxidation and reduction. 2. The reaction of 1-bromobutane with sodium hydroxide affords the substitution product 1-butanol. What would happen to the rate of the reaction if the concentration of...
pleas help 5,6,7,8,9,10 III IV 5. The product of free-radical halogenation reactions is an alkyl halide....
pleas help 5,6,7,8,9,10
III IV 5. The product of free-radical halogenation reactions is an alkyl halide. The major amount of this halide forms during the second step of propagation. However, you should be aware that one possible termination step also forms alkyl halides. Why does the majority of the alkyl halide product come from the propagation step and not the termination step? A. At any given time during the reaction, the concentration of both the alkyl radical and the halide...
15 Which of the following alkyl halides is most reactive in an SN2 reaction with Lil?...
15 Which of the following alkyl halides is most reactive in an SN2 reaction with Lil? H2 Br H,c Br CHs HyC a) I b) II c) III d) All three have equal reactivities
1. Which of the following structures is/are a secondary alkyl halide? (a) I and II (b)...
1. Which of the following structures is/are a secondary alkyl
halide? (a) I and II (b) II and V (c) I, II and V (d) IV only (e)
I, II and III 2. Which of the following is/are aprotic solvent(s)?
Choose all correct answers. (a) (b) (c) (d) (e) (f) 3. Which of the
following carbocations, if formed, is (are) likely to undergo
rearrangement through a hydride shift? (a) I (b) II (c) III (d) I
and II (e) II...
check the multuple choice I filled out and help with the ones i left blank please!!...
check the multuple choice I filled out and help with the ones
i left blank please!!
Problem Set Seven (15 points) Chapter 7 and the beginning of 8 Due: Mon, Mar 16 at the beginning of class Multiple Choice Section (0.5 pt each) 1. Which of the compounds below contains a socechy (1) alkyl halide? R-X Primary 3. Which of the following alkyl halides will undergo the fastest Sl reaction with ethanol (HOCH.CH.)? IV a) -Bromo-1-methylcyclopentane (b) 1-Bromobutane (c) Cyclohexyl...
13. What is (are) the elimination product(s) of the following reaction Br メ A) Only I...
13. What is (are) the elimination product(s) of the following reaction Br メ A) Only I B) Only II C) Only III D) II and III Which of the following represents the rate law for an E2 reaction? A) Rate k[alkyl halide] B) Rate k[alkyl halide][base] C) Rate k[alkyl halide]2 D) Rate k[base] 14. 15. Which of the following statements about the mechanism of an E2 reaction is true? A) B) C) D) All bonds are broken and formed in...
Which heterolysis step will occur slowest? Ca 090980 Select one: O a. I O b. II...
Which heterolysis step will occur slowest? Ca 090980 Select one: O a. I O b. II O O c. III d. IV O e. V
Multiple Choice Identify the choice thar best completes the statement or answers the question. Use the alkyl bromides below to answer the following five questions: Br -Br CH3 Br IV 10. Which of the alkyl halides is most likely to participate in an SN2 reaction? a. II d. III b. IV e. V c. I 11. Compound II can be classified as a alkyl halide. e. I a. quaternary c. primary b. tertiary d. secondary 12. Which of the alkyl...
16. Which of the following is correct regarding Sy2 reactions of alkyl halides? A. Secondary halides react faster than primary halides. B. Rate of reaction depends on the concentrations of the alkyl halide only. C. Favored in polar aprotic solvents D. Results in a racemic mixture
22. Which of the following structures has the Sconfiguration? CH2CH3 CH2CH3 HECCI ......CH н OH ну H2CH2C сна A) Only 1 B) Only II C) Only I and II D) I, II and III 23. Which of the following structures has the configuration? CH,CH, CH.CH OH ...CHHECH H HỊCHẠC \ D) I, II and III A) Only I B) Only II C) Only I and II 24. What is the relationship between the following compounds? OH om B) Diastereomers C)...
hich of the following statements about the reactions of alkyme A) The characteristic reactions of alkyl halides are addition and elimination B) The characteristic reactions of alkyl halides are addition and substitution C) The characteristic reactions of alkyl halides are elimination and substitution D) The characteristic reactions of alkyl halides are oxidation and reduction. 2. The reaction of 1-bromobutane with sodium hydroxide affords the substitution product 1-butanol. What would happen to the rate of the reaction if the concentration of...
pleas help 5,6,7,8,9,10
III IV 5. The product of free-radical halogenation reactions is an alkyl halide. The major amount of this halide forms during the second step of propagation. However, you should be aware that one possible termination step also forms alkyl halides. Why does the majority of the alkyl halide product come from the propagation step and not the termination step? A. At any given time during the reaction, the concentration of both the alkyl radical and the halide...
15 Which of the following alkyl halides is most reactive in an SN2 reaction with Lil? H2 Br H,c Br CHs HyC a) I b) II c) III d) All three have equal reactivities
1. Which of the following structures is/are a secondary alkyl
halide? (a) I and II (b) II and V (c) I, II and V (d) IV only (e)
I, II and III 2. Which of the following is/are aprotic solvent(s)?
Choose all correct answers. (a) (b) (c) (d) (e) (f) 3. Which of the
following carbocations, if formed, is (are) likely to undergo
rearrangement through a hydride shift? (a) I (b) II (c) III (d) I
and II (e) II...
check the multuple choice I filled out and help with the ones
i left blank please!!
Problem Set Seven (15 points) Chapter 7 and the beginning of 8 Due: Mon, Mar 16 at the beginning of class Multiple Choice Section (0.5 pt each) 1. Which of the compounds below contains a socechy (1) alkyl halide? R-X Primary 3. Which of the following alkyl halides will undergo the fastest Sl reaction with ethanol (HOCH.CH.)? IV a) -Bromo-1-methylcyclopentane (b) 1-Bromobutane (c) Cyclohexyl...
13. What is (are) the elimination product(s) of the following reaction Br メ A) Only I B) Only II C) Only III D) II and III Which of the following represents the rate law for an E2 reaction? A) Rate k[alkyl halide] B) Rate k[alkyl halide][base] C) Rate k[alkyl halide]2 D) Rate k[base] 14. 15. Which of the following statements about the mechanism of an E2 reaction is true? A) B) C) D) All bonds are broken and formed in...
Which heterolysis step will occur slowest? Ca 090980 Select one: O a. I O b. II O O c. III d. IV O e. V
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