Organic Chemistry
7th Edition
ISBN: 9780321803221
Author: Paula Y. Bruice
Publisher: Prentice Hall
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Textbook Question
Chapter 19, Problem 70P
Use the four compounds shown below to answer the following questions:
- a. Why are the ortho-halo-substituted benzoic acids stronger acids than benzoic acid?
- b. Why is o-fluorobenzoic acid the weakest of the ortho-halo-substituted benzoic acids?
- c. Why do o-chlorobenzoic acid and o-bromobenzoic acid have similar pKa values?
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Check out a sample textbook solutionStudents have asked these similar questions
Use the four compounds shown below to answer the following questions:
a. Why are the ortho-halo-substituted benzoic acids stronger acids than benzoic acid?b. Why is o-fluorobenzoic acid the weakest of the ortho-halo-substituted benzoic acids?c. Why do o-chlorobenzoic acid and o-bromobenzoic acid have similar pKa values?
Although p-hydroxybenzoic acid is less acidic than benzoic acid, o-hydroxybenzoic acid is slightly more acidic than benzoic acid. Explain this result.
Why are carboxylic acids more acidic than alcohols?
The increased inductive effect of the alkyl group of the carboxylic acid
resonance stabilization of the carboxylate ion (conjugate base of carboxylic
acids)
Due to hydrogen bonding
They have high pKa values
Chapter 19 Solutions
Organic Chemistry
Ch. 19.1 - Draw the structure for each of the following: a....Ch. 19.2 - PROBLEM 2
If electrophilic addition to benzene is...Ch. 19.4 - Why does hydration inactivate FeBr3?Ch. 19.6 - Prob. 5PCh. 19.7 - Prob. 6PCh. 19.8 - What is the major product of a Friedel-Crafts...Ch. 19.10 - Describe two ways to prepare each of the following...Ch. 19.12 - Prob. 9PCh. 19.13 - Name the following:Ch. 19.13 - Prob. 12P
Ch. 19.13 - Prob. 13PCh. 19.13 - Prob. 14PCh. 19.14 - Prob. 15PCh. 19.14 - List the compounds in each set from most reactive...Ch. 19.15 - Prob. 18PCh. 19.15 - What product(s) result from nitration of each of...Ch. 19.15 - Prob. 20PCh. 19.16 - Which acid in each of the following pairs is...Ch. 19.16 - Prob. 23PCh. 19.16 - Prob. 24PCh. 19.18 - Show how the following compounds can be...Ch. 19.18 - Give the products, if any, of each of the...Ch. 19.19 - a. Does a coupling reaction have to be used to...Ch. 19.19 - PROBLEM 28
Show how each of the following...Ch. 19.20 - What is the major product(s) of each of the...Ch. 19.20 - Prob. 30PCh. 19.21 - Why isn't FeBr3 used as a catalyst in the first...Ch. 19.21 - Prob. 33PCh. 19.21 - Write the sequence of steps required for the...Ch. 19.21 - Prob. 35PCh. 19.22 - What product is formed from reaction of...Ch. 19.22 - Prob. 37PCh. 19.22 - Draw the structure of the activated ring and the...Ch. 19.23 - Prob. 39PCh. 19.23 - Prob. 40PCh. 19.23 - Diazomethane can be used to convert a carboxylic...Ch. 19.24 - Prob. 42PCh. 19.24 - Prob. 43PCh. 19.24 - Prob. 44PCh. 19.25 - Prob. 45PCh. 19 - Draw the structure for each of the following: a....Ch. 19 - Prob. 47PCh. 19 - Prob. 48PCh. 19 - Prob. 49PCh. 19 - For each of the statements in Column I, choose a...Ch. 19 - What product is obtained from the reaction of...Ch. 19 - Draw the product(s) of each of the following...Ch. 19 - Rank the following substituted anilines from most...Ch. 19 - Prob. 54PCh. 19 - The compound with the 1H NMR spectrum shown below...Ch. 19 - Prob. 56PCh. 19 - Show how the following compounds can be...Ch. 19 - Prob. 58PCh. 19 - Rank each group of compounds from most reactive to...Ch. 19 - Prob. 60PCh. 19 - Describe two ways to prepare anisole from benzene.Ch. 19 - For each of the following components, indicate the...Ch. 19 - Prob. 63PCh. 19 - Prob. 64PCh. 19 - Prob. 65PCh. 19 - Prob. 66PCh. 19 - An aromatic hydrocarbon with a molecular formula...Ch. 19 - The following tertiary alkyl bromides undergo an...Ch. 19 - Show how the following compounds can be...Ch. 19 - Use the four compounds shown below to answer the...Ch. 19 - a. Rank the following esters from most reactive to...Ch. 19 - A mixture of 0.10 mol benzene and 0.10 mol...Ch. 19 - Prob. 73PCh. 19 - Benzene underwent a Friedel-Crafts acylation...Ch. 19 - Prob. 75PCh. 19 - Prob. 76PCh. 19 - Prob. 77PCh. 19 - Friedel-Crafts alkylations can be carried out with...Ch. 19 - Show how the following compounds can be prepared...Ch. 19 - Prob. 80PCh. 19 - Prob. 81PCh. 19 - a. Describe four ways the following reaction can...Ch. 19 - Propose a mechanism for each of the following...Ch. 19 - Prob. 84PCh. 19 - Describe how naphthalene can he prepared from the...Ch. 19 - Prob. 86PCh. 19 - Using resonance contributors for the carbocation...Ch. 19 - Prob. 88PCh. 19 - When heated with chromic acid, compound A forms...Ch. 19 - Prob. 90PCh. 19 - Prob. 91PCh. 19 - What reagents are required to carry out the...Ch. 19 - Show how the following compounds can be prepared...Ch. 19 - An unknown compound reacts with ethyl chloride and...Ch. 19 - How can you distinguish the following compounds...Ch. 19 - P-Fluoronitrobenzene is more reactive toward...Ch. 19 - a. Explain why the following reaction leads to the...Ch. 19 - Describe how mescaline can be synthesized from...Ch. 19 - Propose a mechanism for the following reaction...Ch. 19 - Explain why hydroxide ion catalyzes the reaction...Ch. 19 - Propose a mechanism for each of the following...Ch. 19 - Prob. 102PCh. 19 - Prob. 103PCh. 19 - Describe how 3-methyl-1-phenyl-3-pentanol can he...Ch. 19 - a. How can aspirin be synthesized from benzene? b....Ch. 19 - Prob. 106PCh. 19 - Show how Novocain, a painkiller used frequently by...Ch. 19 - Prob. 108PCh. 19 - Saccharin, an artificial sweetener, is about 300...
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- Carbonyl compounds can be protonated on the carbonyl oxygen. Protonation of the carbonyl oxygen gives a species whose positive charge is delocalized by resonance. Explain why acetic acid (ethanoic acid) is more readily protonated than acetone (propanone).arrow_forwardIs carvacrol more acidic or less acidic than phenol? Explain your answer.arrow_forwardThe order of increasing acidity is Phenol < meta-cyanophenol < ortho-cyanophenol 1.how about para-cyanophenol??does it has higher acidicity than both ortho-cyanophenol and meta cyanophenol or lower?? 2.why does ortho-cyanophenol have higher acidicity than meta cyanophenol?? 3. why doesmeta cyanophenol have higher acidicity than Phenolarrow_forward
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- 1. Explain why the protonation of pyrrole occurs at C2 to form A, rather than the N atom to form B 2. Explain why compound A is more acidic than C, the conjugate acid of pyridine. :N-H H H H -H Pyrrole pKa=0.4 pKa=5.3 A B C Harrow_forwardIdentify the most and the least acidic compound in each of the following sets. Leave the remaining answer in each set blank. a) 2,4-dinitrobenzoic acid: v p-nitrobenzoic acid: p-bromobenzoic acid: b) benzoic acid: v formic acid: v propanoic acid: c) cyclohexanol: v phenol: v benzoic acid:arrow_forwardThe pKa of phenol is 10.0 and the pKa of para-nitrophenol is 7.2. Given this information, one knows that The conjugate base of para-nitrophenol must be less stable than the conjugate base of phenol The conjugate acid of para-nitrophenol must be more stable than the conjugate base of phenol The conjugate base of para-nitrophenol must be more stable than the conjugate base of phenol Both acids are basesarrow_forward
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