Homework Answers
option D is correct. Among the halogens, iodine is largest and fluorine is smallest. As the size increases, the bond length of C-I bond increases due to larger orbitals.
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Which of the following alkyl halides contains the longest carbon-halogen bond? Select one: A B C...
18. The main reason that alkyl halides are good electrophiles is that: A) the carbon halogen...
18. The main reason that alkyl halides are good electrophiles is that: A) the carbon halogen bond is very strong. B) the carbon atom linked to the halogen is positively polarized. C) the carbon atom linked to the halogen is electronegative. D) the halogen linked to the carbon is a good electron donor. E) the carbon atom linked to the halogen is negatively polarized.
Rank the following compounds in order of the length of the carbon-halogen bond. Give the number 1 to the shortest bond and the number 4 to the longest bond.
COIT0402786 Rank the following compounds in order of the length of the carbon-halogen bond. Give the number 1 to the shortest bond and the number 4 to the longest bond. C01T041173 What type(s) of orbital overlap Is(are) indicated on the following structure:CO1T0406878 Rank the following compounds in order of the length of the carbon-halogen bond. Give the number 1 to the shortest bond and the number 4 to the longest bond
21. When an alkyl halide undergoes E2 elimination the halogen and leaving hydrogen must be/have A...
21. When an alkyl halide undergoes E2 elimination the halogen and leaving hydrogen must be/have A B. on the same carbon parallel bonds anti-periplanar a low activation energy none of these யே SN2 reactions work best with? polar aprotic solvents tertiary alkyl halides weak nucleophiles polar protic solvents none of these யே
Which of the following alkyl halides is likely to undergo rearrangement by a 1, 2- methyl...
Which of the following alkyl halides is likely to undergo rearrangement by a 1, 2- methyl shift? A) 3-bromo-3-methylpentane B) 2-chloro-3, 3-dimethylpentane C) 3-bromo-2, 3-dimethylpentane D) 2-iodo-2-methylpentane Which of the following alkyl halides is the worst substrate for the Sn2 reaction? A) Br B) Br C) Br D) Br In the mechanism for the reaction shown below, the first curved arrow moves from_ to Н. CH3CH2NH2 H3C + CH3 A) carbon (in CH3CH2NH2) to oxygen B) oxygen to nitrogen C)...
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
3s- Which of the following alkyl groups would show the multiplet pattern depicted in the diagram?...
3s- Which of the following alkyl groups would show the multiplet pattern depicted in the diagram? CH3 CH3 CH3 CH3 39- Which is the correct namefor d-Ferrocene a-Acetyl b-Cyclopentene -Aromatic ferrate 40-addition of a Grignard reagent to formaldehyde followed by H,O' gives a- 1° alcohol b- 2ndry alcohol c tertiary alcohol d-Aldhyde 41-Organometallic compound: a compound that contains a- Carbon Oxygen bond b Carbon halogen bond c-carbon hydrogen bond d- a carbon-metal bond 42.The correct IUPAC name for this compound...
Devise a synthesis of these compounds starting with 3-carbon alkyl halides. Show any necessary reagents and...
Devise a synthesis of these compounds starting with 3-carbon alkyl halides. Show any necessary reagents and reaction conditions. All carbons must ultimately come from the 3-carbon alkyl halides. Once you have made a new compound, you may reuse it without making it again. a) Propanone b) Butanoic acid c) 3-hexene
Which of the following alkyl halides reacts the fastest in an SN2 reaction? A) chloromethane B)...
Which of the following alkyl halides reacts the fastest in an SN2 reaction? A) chloromethane B) 2-chlorobutane C) 1-chlorobutane D) 2-chloro-2-methylpropane
Alkyl halides may undergo elimination reactions with BrØnstead-Lowry bases in which the halide and an adjacent...
Alkyl halides may undergo elimination reactions with BrØnstead-Lowry bases in which the halide and an adjacent proton are lost to form a new π bond. Because of the loss of a proton and a halide anion the reactions are termed ‘dehydrohalogenation’. The two most common associated mechanisms are designated as either unimolecular (E1) or bimolecular (E2) elimination reactions based on reaction rate studies. E1 reactions proceed via a two-step mechanism that involves the cleavage of the leaving group (here the...
9. Which of the following alkyl halides is most rea order kinetics? y halides is most...
9. Which of the following alkyl halides is most rea order kinetics? y halides is most reactive in an elimination reaction having first- A. A B.B C.C D.D E. E 10. Which of the following statements is (are) true about an E2 elimination reaction? A. It is fastest with 3 halides. B. It exhibits second-order kinetics. C. A better leaving group should make a faster reaction. D. Both (It is fastest with 3 halides) and (It exhibits second order kinetics)...
18. The main reason that alkyl halides are good electrophiles is that: A) the carbon halogen bond is very strong. B) the carbon atom linked to the halogen is positively polarized. C) the carbon atom linked to the halogen is electronegative. D) the halogen linked to the carbon is a good electron donor. E) the carbon atom linked to the halogen is negatively polarized.
21. When an alkyl halide undergoes E2 elimination the halogen and leaving hydrogen must be/have A B. on the same carbon parallel bonds anti-periplanar a low activation energy none of these யே SN2 reactions work best with? polar aprotic solvents tertiary alkyl halides weak nucleophiles polar protic solvents none of these யே
Which of the following alkyl halides is likely to undergo rearrangement by a 1, 2- methyl shift? A) 3-bromo-3-methylpentane B) 2-chloro-3, 3-dimethylpentane C) 3-bromo-2, 3-dimethylpentane D) 2-iodo-2-methylpentane Which of the following alkyl halides is the worst substrate for the Sn2 reaction? A) Br B) Br C) Br D) Br In the mechanism for the reaction shown below, the first curved arrow moves from_ to Н. CH3CH2NH2 H3C + CH3 A) carbon (in CH3CH2NH2) to oxygen B) oxygen to nitrogen C)...
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
3s- Which of the following alkyl groups would show the multiplet pattern depicted in the diagram? CH3 CH3 CH3 CH3 39- Which is the correct namefor d-Ferrocene a-Acetyl b-Cyclopentene -Aromatic ferrate 40-addition of a Grignard reagent to formaldehyde followed by H,O' gives a- 1° alcohol b- 2ndry alcohol c tertiary alcohol d-Aldhyde 41-Organometallic compound: a compound that contains a- Carbon Oxygen bond b Carbon halogen bond c-carbon hydrogen bond d- a carbon-metal bond 42.The correct IUPAC name for this compound...
Which of the following alkyl halides reacts the fastest in an SN2 reaction? A) chloromethane B) 2-chlorobutane C) 1-chlorobutane D) 2-chloro-2-methylpropane
9. Which of the following alkyl halides is most rea order kinetics? y halides is most reactive in an elimination reaction having first- A. A B.B C.C D.D E. E 10. Which of the following statements is (are) true about an E2 elimination reaction? A. It is fastest with 3 halides. B. It exhibits second-order kinetics. C. A better leaving group should make a faster reaction. D. Both (It is fastest with 3 halides) and (It exhibits second order kinetics)...
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