Which of the following species is attacked by benzene in the electrophilic nitration reaction? (a)HNO3 (b)NO2-...

Which of the following species is attacked by benzene in the electrophilic nitration reaction? (a)HNO₃ (b)NO₂^- (c)NO₂⁺ (d) NO⁺
Which of the following is the strongest activating group in electrophilic aromatic substitution reactions? (a) CH₂CH₃ (b) OCH₃ (c)CO₂CH₃ (d) NO₂
In electrophilic aromatic substitution reactions a bromine substituent is (a) a deactivator and a m-director (b) a deactivator and an o,p-director (c) an activator and a m-director (d) an activator and an o,p-director

4. List at least two of the limitations associated with the Friedel-Crafts alkylation reaction

5. Which of the following compounds would most likely be used in the preparation of tertiarybutylbenzene? (a) (CH3)₂CHCOCl (b) (CH₃)₃CCOCl (c)CH₃CH₃CH₃COCl (d) CH₃CH₃COCl

6. Which of the following compounds is least reactive in the nucleophilic aromatic substitution reactions with NaOH? (a)2,4-dinitrochlorobenzene (b)m-nitrochlorobenzene (c)o-nitrochlorobenzene (d)3,5-dinitrochlorobenzene

7. Which mechanism of nucleophilic aromatic substitution reaction proceeds via a benzyne intermediate? (a) addition-elimination mechanism (b)elimination-addition mechanism

8. Which mechanism of nucleophilic aromatic substitution reaction proceeds via a negatively charged Meisenheimer complex? (a) addition-elimination mechanism (b)elimination-addition mechanism

Expert Solution

queen_honey_blossom answered 11 months ago

Why pyridine is less reactive than benzene towards electrophilic substitution reaction?

Propose, how to obtain the following compounds, starting from benzene, and using a sequence of electrophilic...

Propose, how to obtain the following compounds, starting from benzene, and using a sequence of electrophilic aromatic substitution reactions (be careful about directing effect of substituents). m- bromoacetophenone, 3-bromo-4-tert butyl nitrobenzene

NO2 (g) + OH• (g)à HNO3 (g) The rate constant for this reaction is 1.2x10-11 cm3...

NO2 (g) + OH• (g)à HNO3 (g) The rate constant for this reaction is 1.2x10-11 cm3 molecule-1s-1. Write the rate law for this reaction. hydroxyl radical concentration in atmosphere is 2.0 x106 molecules cm-3 at 25 oC, find the atmospheric lifetime of NO2 at 25 oC (in hours) Use the information from first second , determine the concentration of hydroxyl radicals in ppbv at 25 oC and 1.0 atm.

Draw the lewis structure for the following molecules ions NO2 , HOOH , HNO3 , N2O...

Draw the lewis structure for the following molecules ions NO2 , HOOH , HNO3 , N2O , H2SO4

The initial rate of the reaction of species A and B A + 2 B →...

The initial rate of the reaction of species A and B A + 2 B → C was measured at a temperature of 25 °C for various initial concentrations of A and B. Data are collected in the table. Determine the rate equation from these data. What is the overall order of the reaction? What is the value of the rate constant? (Give the appropriate units of k.) Initial Concentrations, mol/L Initial Rate Experiment [A] [B] mol L-1 s-1 1...

23. Nitrobenzene (NB) is made by nitrating benzene (B) with a mixed acid (39% HNO3, 53%...

23. Nitrobenzene (NB) is made by nitrating benzene (B) with a mixed acid (39% HNO3, 53% H2SO4, 8% H2O). The reaction is: C6H6 + HNO3 ? C6H5NO2 + H2O Conversion of B to NB is 97% complete 1000 lbm of B and 2070 lbm of acid used How much xs HNO3was used? How much NB is formed?

Cu(s)+HNo3(aq)- Cu(NO3)2(aq)+NO2(g)+H2O 1. which chemical species is the limiting reaggent? 2.which chemical spcies is the non-limiting...

Cu(s)+HNo3(aq)- Cu(NO3)2(aq)+NO2(g)+H2O 1. which chemical species is the limiting reaggent? 2.which chemical spcies is the non-limiting reagent? 3.Theoretical Volume amount of nitric acid needed used. 4Experimental Volume amount of nitc acid used. 5.Experimental Volume amount of nitric acid remaining.

Balance the following redox reaction: NH4+ to NO2- via oxygen reduction B) Write the full balanced...

Balance the following redox reaction: NH4+ to NO2- via oxygen reduction B) Write the full balanced reaction. No fractions. C) Indicate which species (molecules) are being oxidized and reduced D) Within these species (molecules), identify which elements are being reduced and oxidized. For these elements, show the change in their oxidation numbers (start and end oxidation numbers). E) Calculate the pe°cell for this reaction in water and determine whether this reaction will proceed spontaneously (calculate ΔG).

Which of the following can be used as an anaesthesia? (a) N2O (b) NO (c) NCl3 (d) NO2

Which of the following can be used as an anaesthesia?(a) N2O(b) NO(c) NCl3(d) NO2

Draw a Lewis structure for the following species: CH3N2+, HNO3, N3-, CH3CONH2, O3,

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