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8. All of the C-C bonds of benzene are: a. the same length b. radical like...
on T. Maitiple choiee. Select the best anaver. (0.5 points each) i. Which statement below is...
on T. Maitiple choiee. Select the best anaver. (0.5 points each) i. Which statement below is true the aromatic substitution involving the bromina of benzene? znBry acts as the Lewis acid B) Feßr, acts as the Lewis base c) Br, acts as nugaed aromatic ring D) n-electrons of benzene act as the electrophile E) FeBr, acta as the Lewis acid. a what is rue about the rate and the najor predust of nitration of the methoxybenzene? A) Proceeds more rapidly...
There are 3 pictures, 18 exercises in total. Topics are Benzenes and their reactions No -I...
There are 3 pictures, 18 exercises in total. Topics are Benzenes
and their reactions
No -I ab 0 CH3 Br nooit 1. Aromatic molecules contain Tt electrons. a. 4n b. 4n+2 c. An odd number d. 4n+1 c. Zero Condition needed for benzene halogenation to occur a. NaC1, 1120 b. C12, H20 c. C12, AICI3 d. NaCl, CH3OH e. C12, CC14 3. In an electrophilic aromatic substitution, the hydroxyl group orients ortho-para because a, removes electronic density from the benzene...
identify the preferred site(s) of electrophilic attack on the following compound 1-CH-04 >> ringt r ing...
identify the preferred site(s) of electrophilic attack on the following compound 1-CH-04 >> ringt r ing 2 A) ortho para positions on ring 1 B) meta position on ring 2 C) meta position on ring 1 D) orthopara positions on ring 2 2) The major products) in the nitration of benzoic acid isare) A) nitrobenzene. B) nitroben ene and para-nitrobenzoic acid. C) mixture of the and pre-nitrobenzoic acid. D -nitrobenzoic acid. 3) What is the electrophile in the Friedel-Crafts alkylation...
Arrange the following compounds in increasing order of their reactivity to electrophiles. (least reactive first) A....
Arrange the following compounds in increasing order of their reactivity to electrophiles. (least reactive first) A. CH CHO (benzaldehyde) B. C&HOCH, (anisole) C. C HBr (bromobenzene) D. CH3CH, (toluene) 1) A<C<D<B 2) A<D<C< B 3 ) C<A<B<D 4) C<A<D<B Nitration of chlorobenzene occurs: 1) faster than nitration of benzene and gives the ortho and para products. 2) faster than nitration of benzene and gives the meta product. 3) slower than nitration of benzene and gives the ortho and para products....
please help in all sections asap!! In a Clemmensen reduction, an aryl ketone is reduced to...
please help in all sections asap!!
In a Clemmensen reduction, an aryl ketone is reduced to an Oaryl aldehyde Caryl alkane aryl carboxylic acid aryl ester aryi anhydride Identify the electrophile for the Friedel-Crafts acylation of benzene. O aluminum tetrachloride anion aluminum chloride acylium ion carbocation carbanion Which of the following criteria is necessary for a nucleophilic aromatic substitution reaction? © A. The ring must contain a very strong electron withdrawing group. B. The ring must contain a leaving group....
1.Friedel-Crafts acylation of ortho-nitrotoluene with acetyl chloride and aluminum trichloride gives: A.a mixture of acetophenones with...
1.Friedel-Crafts acylation of ortho-nitrotoluene with acetyl chloride and aluminum trichloride gives: A.a mixture of acetophenones with the nitro group always ortho or para to the carbonyl. B.almost exclusively a single product, 3-nitro-4-methyl-acetophenone. C.2-methyl-acetophenone by nitro group displacement. D.no reaction since the nitro group is so deactivating. 2.You decide to make meta-nitrophenol by doing which of the following steps? A.Reacting phenol with fuming nitric acid in an ice bath. B.Reacting benzene with fuming nitric acid, then reacting the product with chlorine/iron,...
use this table to answer the following questions. Use this table to answer the following questions...
use this table to answer the following questions.
Use this table to answer the following questions in this week's exercise. Starting compounds Benzene Common reactions Nitration Toluene Sulfonation Redox reagents H2+ Pd-C, Fe+ HCl, or Sn+ HCI Zn(Hg) +HCI+, NH NH3 + 3H + KIMnO4, Na Cr 0; +H SO + H2O ZnO +1 Halogenation Friedel-Crafts alkylation Friedel-Crafts acylation NBS + hv Examples: This question is from the homework. What reaction(s)/reagent(s) do we use to prepare the prod What is...
437 Predict whether the following substituents on the benzene ring are likely to be ha para...
437 Predict whether the following substituents on the benzene ring are likely to be ha para directing or meta directing and whether they are like to be ring activating or ring deactivating deact vabang a) - NH(CH 4.38 For each of the monosabstituted benenes shown below, (1) Indicate whether the substituent is ortho, para directing or meta directing (2) Draw the structure of the main monosubstitution product for each of the reactions indicated orth. OCH3 + HCl -OCHE (fecutulys ortho...
Choose the incorrect statement for the electrophilic aromatic substitution. a) Bromo group deactivating b) Aniline is...
Choose the incorrect statement for the electrophilic aromatic substitution. a) Bromo group deactivating b) Aniline is more reactive than benzene b) Nitrobenzene is meta-directing d) Acetophenone is para-directing e) Biphenyl undergoes electrophilic aromatic substitution.
4 (6 pts) For each of the following compounds, indicate which statement (A-E) best describes the...
4 (6 pts) For each of the following compounds, indicate which statement (A-E) best describes the reactivity of the benzene ring in electrophilic aromatic substitution reactions (e.g., nitration). A. The ortbo and para positions are activated and the meta position is deactivated. C. The ortho and para positions are deactivated and the meta position is activated. A. All positions are activated -ortho and para are more activated than meta. D. All positions are deactivated -ortbo and para are more deactivated...
on T. Maitiple choiee. Select the best anaver. (0.5 points each) i. Which statement below is true the aromatic substitution involving the bromina of benzene? znBry acts as the Lewis acid B) Feßr, acts as the Lewis base c) Br, acts as nugaed aromatic ring D) n-electrons of benzene act as the electrophile E) FeBr, acta as the Lewis acid. a what is rue about the rate and the najor predust of nitration of the methoxybenzene? A) Proceeds more rapidly...
There are 3 pictures, 18 exercises in total. Topics are Benzenes
and their reactions
No -I ab 0 CH3 Br nooit 1. Aromatic molecules contain Tt electrons. a. 4n b. 4n+2 c. An odd number d. 4n+1 c. Zero Condition needed for benzene halogenation to occur a. NaC1, 1120 b. C12, H20 c. C12, AICI3 d. NaCl, CH3OH e. C12, CC14 3. In an electrophilic aromatic substitution, the hydroxyl group orients ortho-para because a, removes electronic density from the benzene...
identify the preferred site(s) of electrophilic attack on the following compound 1-CH-04 >> ringt r ing 2 A) ortho para positions on ring 1 B) meta position on ring 2 C) meta position on ring 1 D) orthopara positions on ring 2 2) The major products) in the nitration of benzoic acid isare) A) nitrobenzene. B) nitroben ene and para-nitrobenzoic acid. C) mixture of the and pre-nitrobenzoic acid. D -nitrobenzoic acid. 3) What is the electrophile in the Friedel-Crafts alkylation...
Arrange the following compounds in increasing order of their reactivity to electrophiles. (least reactive first) A. CH CHO (benzaldehyde) B. C&HOCH, (anisole) C. C HBr (bromobenzene) D. CH3CH, (toluene) 1) A<C<D<B 2) A<D<C< B 3 ) C<A<B<D 4) C<A<D<B Nitration of chlorobenzene occurs: 1) faster than nitration of benzene and gives the ortho and para products. 2) faster than nitration of benzene and gives the meta product. 3) slower than nitration of benzene and gives the ortho and para products....
please help in all sections asap!!
In a Clemmensen reduction, an aryl ketone is reduced to an Oaryl aldehyde Caryl alkane aryl carboxylic acid aryl ester aryi anhydride Identify the electrophile for the Friedel-Crafts acylation of benzene. O aluminum tetrachloride anion aluminum chloride acylium ion carbocation carbanion Which of the following criteria is necessary for a nucleophilic aromatic substitution reaction? © A. The ring must contain a very strong electron withdrawing group. B. The ring must contain a leaving group....
use this table to answer the following questions.
Use this table to answer the following questions in this week's exercise. Starting compounds Benzene Common reactions Nitration Toluene Sulfonation Redox reagents H2+ Pd-C, Fe+ HCl, or Sn+ HCI Zn(Hg) +HCI+, NH NH3 + 3H + KIMnO4, Na Cr 0; +H SO + H2O ZnO +1 Halogenation Friedel-Crafts alkylation Friedel-Crafts acylation NBS + hv Examples: This question is from the homework. What reaction(s)/reagent(s) do we use to prepare the prod What is...
437 Predict whether the following substituents on the benzene ring are likely to be ha para directing or meta directing and whether they are like to be ring activating or ring deactivating deact vabang a) - NH(CH 4.38 For each of the monosabstituted benenes shown below, (1) Indicate whether the substituent is ortho, para directing or meta directing (2) Draw the structure of the main monosubstitution product for each of the reactions indicated orth. OCH3 + HCl -OCHE (fecutulys ortho...
Choose the incorrect statement for the electrophilic aromatic substitution. a) Bromo group deactivating b) Aniline is more reactive than benzene b) Nitrobenzene is meta-directing d) Acetophenone is para-directing e) Biphenyl undergoes electrophilic aromatic substitution.
4 (6 pts) For each of the following compounds, indicate which statement (A-E) best describes the reactivity of the benzene ring in electrophilic aromatic substitution reactions (e.g., nitration). A. The ortbo and para positions are activated and the meta position is deactivated. C. The ortho and para positions are deactivated and the meta position is activated. A. All positions are activated -ortho and para are more activated than meta. D. All positions are deactivated -ortbo and para are more deactivated...
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