Organic Chemistry (8th Edition)
8th Edition
ISBN: 9780134042282
Author: Paula Yurkanis Bruice
Publisher: PEARSON
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Textbook Question
Chapter 18, Problem 66P
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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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?
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
Although p-hydroxybenzoic acid is less acidic than benzoic acid, o-hydroxybenzoic acid is slightly more acidic than benzoic acid. Explain this result.
Chapter 18 Solutions
Organic Chemistry (8th Edition)
Ch. 18.1 - Draw the structure for each of the following: a....Ch. 18.3 - Why does hydration inactivate FeBr3?Ch. 18.6 - Prob. 4PCh. 18.7 - What is the major product of a Friedel-Crafts...Ch. 18.9 - Describe two ways to prepare each of the following...Ch. 18.10 - Prob. 7PCh. 18.11 - Name the following:Ch. 18.11 - Draw a structure for each of the following: a....Ch. 18.11 - Draw the structure for each of the following: a....Ch. 18.11 - Correct the following incorrect names: a....
Ch. 18.12 - Prob. 14PCh. 18.12 - List the compounds in each set from most reactive...Ch. 18.13 - Prob. 16PCh. 18.13 - What product(s) result from nitration of each of...Ch. 18.13 - Prob. 18PCh. 18.13 - What products are obtained from the reaction of...Ch. 18.15 - Give the products, if any, of each of the...Ch. 18.16 - a. Does a coupling reaction have to be used to...Ch. 18.16 - Show how the following compounds can be...Ch. 18.16 - Prob. 24PCh. 18.17 - What is the major product(s) of each of the...Ch. 18.17 - Prob. 26PCh. 18.18 - Why isn't FeBr3 used as a catalyst in the first...Ch. 18.18 - Prob. 29PCh. 18.18 - Write the sequence of steps required for the...Ch. 18.18 - Show how the following compounds can be...Ch. 18.19 - What product is formed from reaction of...Ch. 18.19 - Prob. 33PCh. 18.19 - Draw the structure of the activated ring and the...Ch. 18.20 - Prob. 35PCh. 18.20 - Prob. 36PCh. 18.20 - Diazomethane can be used to convert a carboxylic...Ch. 18.21 - Prob. 38PCh. 18.21 - Prob. 39PCh. 18.21 - Prob. 40PCh. 18.22 - Prob. 41PCh. 18 - Draw the structure for each of the following: a....Ch. 18 - Name the following:Ch. 18 - Prob. 44PCh. 18 - Prob. 45PCh. 18 - For each of the statements in Column I, choose a...Ch. 18 - What product is obtained from the reaction of...Ch. 18 - Draw the product(s) of each of the following...Ch. 18 - Rank the following substituted anilines from most...Ch. 18 - Prob. 50PCh. 18 - Prob. 51PCh. 18 - Show how the following compounds can be...Ch. 18 - Prob. 53PCh. 18 - The compound with the 1H NMR spectrum shown below...Ch. 18 - Rank each group of compounds from most reactive to...Ch. 18 - Prob. 56PCh. 18 - Prob. 57PCh. 18 - For each of the following components, indicate the...Ch. 18 - Prob. 59PCh. 18 - Prob. 60PCh. 18 - Describe two ways to prepare anisole from benzene.Ch. 18 - Prob. 62PCh. 18 - The following tertiary alkyl bromides undergo an...Ch. 18 - An aromatic hydrocarbon with a molecular formula...Ch. 18 - Show how the following compounds can be...Ch. 18 - Use the four compounds shown below to answer the...Ch. 18 - a. Rank the following esters from most reactive to...Ch. 18 - A mixture of 0.10 mol benzene and 0.10 mol...Ch. 18 - Prob. 69PCh. 18 - Prob. 70PCh. 18 - Benzene underwent a Friedel-Crafts acylation...Ch. 18 - Prob. 72PCh. 18 - Prob. 73PCh. 18 - Friedel-Crafts alkylations can be carried out with...Ch. 18 - Show how the following compounds can be prepared...Ch. 18 - Prob. 76PCh. 18 - Prob. 77PCh. 18 - a. Describe four ways the following reaction can...Ch. 18 - Propose a mechanism for each of the following...Ch. 18 - How can you prepare the following compounds with...Ch. 18 - Describe how naphthalene can he prepared from the...Ch. 18 - Using resonance contributors for the carbocation...Ch. 18 - Prob. 83PCh. 18 - What reagents are required to carry out the...Ch. 18 - Prob. 85PCh. 18 - Prob. 86PCh. 18 - Prob. 87PCh. 18 - Propose a mechanism for each of the following...Ch. 18 - P-Fluoronitrobenzene is more reactive toward...Ch. 18 - When heated with chromic acid, compound A forms...Ch. 18 - Show how the following compounds can be prepared...Ch. 18 - How can you distinguish the following compounds...Ch. 18 - Describe how mescaline can be synthesized from...Ch. 18 - Propose a mechanism for the following reaction...Ch. 18 - Propose a mechanism for each of the following...Ch. 18 - Describe how 3-methyl-1-phenyl-3-pentanol can he...Ch. 18 - An unknown compound reacts with ethyl chloride and...Ch. 18 - a. Explain why the following reaction leads to the...Ch. 18 - Explain why hydroxide ion catalyzes the reaction...Ch. 18 - Prob. 100PCh. 18 - Prob. 101PCh. 18 - a. How can aspirin be synthesized from benzene? b....Ch. 18 - Prob. 103PCh. 18 - Show how Novocain, a painkiller used frequently by...Ch. 18 - Prob. 105PCh. 18 - Saccharin, an artificial sweetener, is about 300...
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