Organic Chemistry
Organic Chemistry
8th Edition
ISBN: 9781305580350
Author: William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher: Cengage Learning
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Chapter 4.6, Problem 2Q

What is the relative trend in acidity and pKa of the two compounds?

  1. a. Structure I is the most acidic, and Structure I has the highest pKa.
  2. b. Structure I is the most acidic, and Structure I has the lowest pKa.
  3. c. Structure II is the most acidic, and Structure I has the highest pKa.
  4. d. Structure II is the most acidic, and Structure I has the lowest pKa.
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The pka of butanoic acid is 4.82. butanoic acid a. Draw the structure that predominates at a pH of 1.50. b. Draw the structure that predominates at a pH of 9.40. c. Calculate the ratio of conjugate base to acid at a pH of 1.50 d. Calculate the ratio of conjugate base to acid at a pH of 9.40.
What is the conjugate base of HS-1? Select one: a. S-2 b. H2S c. H3S+1 d. H2O
Which species is the conjugate acid of ammonia, NH3? Select one: O a. HẠN O b. H3N* О с. НN O d. HẠN* Which compound has the lowest pk,? Select one: O a. H2O O b. H2S NH3 O d. CH4 Which compound is the strongest acid? CH4 CH,CH3 H2C=CH2 HCECH II IV Select one: O a. Ob. О с. II O d. IV

Chapter 4 Solutions

Organic Chemistry

Ch. 4 - For each conjugate acid-base pair, identify the...Ch. 4 - Complete a net ionic equation for each...Ch. 4 - Arrange the compounds in each set in order of...Ch. 4 - Prob. 4.12PCh. 4 - In acetic acid, CH3COOH, the OH hydrogen is more...Ch. 4 - Which has the larger numerical value? (a) The pKa...Ch. 4 - In each pair, select the stronger acid. (a)...Ch. 4 - Arrange the compounds in each set in order of...Ch. 4 - Arrange the compounds in each set in order of...Ch. 4 - If the G for a reaction is 4.5 kcal/mol at 298 K,...Ch. 4 - Calculate the Keq for the following reactions from...Ch. 4 - Prob. 4.20PCh. 4 - Answer true or false to the following statements...Ch. 4 - In each of the following three reaction coordinate...Ch. 4 - The acid-base chemistry reaction of barium...Ch. 4 - Unless under pressure, carbonic acid (H2CO3) in...Ch. 4 - Prob. 4.25PCh. 4 - Acetic acid, CH3COOH, is a weak organic acid, pKa...Ch. 4 - Benzoic acid, C6H5COOH (pKa 4.19), is only...Ch. 4 - Prob. 4.28PCh. 4 - One way to determine the predominant species at...Ch. 4 - Will acetylene react with sodium hydride according...Ch. 4 - Prob. 4.31PCh. 4 - For each equation, label the Lewis acid and the...Ch. 4 - Complete the equation for the reaction between...Ch. 4 - Each of these reactions can be written as a Lewis...Ch. 4 - The sec-butyl cation can react as both a...Ch. 4 - Prob. 4.36APCh. 4 - Prob. 4.37APCh. 4 - Prob. 4.38APCh. 4 - Explain why the hydronium ion, H3O+, is the...Ch. 4 - What is the strongest base that can exist in...Ch. 4 - Prob. 4.42APCh. 4 - Prob. 4.43APCh. 4 - Methyl isocyanate, CH3N=C=O, is used in the...Ch. 4 - Offer an explanation for the following...Ch. 4 - Prob. 4.46APCh. 4 - Alcohols (Chapter 10) are weak organic acids, pKa...Ch. 4 - As we shall see in Chapter 19, hydrogens on a...Ch. 4 - 2,4-Pentanedione is a considerably stronger acid...Ch. 4 - Write an equation for the acid-base reaction...Ch. 4 - Prob. 4.51APCh. 4 - Prob. 4.52APCh. 4 - Prob. 4.53APCh. 4 - Following is a structural formula for imidazole, a...
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