ORGANIC CHEMISTRY - LOOSELEAF W/CONNECT
6th Edition
ISBN: 9781266060144
Author: SMITH
Publisher: MCG
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Question
Chapter 2.5, Problem 23P
Interpretation Introduction
Interpretation : Ranking of protons in the increasing order of
Concept Introduction :
Lower the
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Which of the underlined protons for molecule 1 and 2 is more acidic and why?
hydrogens on a carbon adjacent to a carbonyl group are far
more acidic than those not adjacent to a carbonyl group. The anion derived from acetone,
for example, is more stable than is the anion derived from ethane. Account for the greater
stability of the anion from acetone.
CH,ČCH, H
CH,CH, H
Acetone
Ethane
pK, 20.2
pK, 51
Using pKa Values to Determine Relative Acidity and Basicity Rank the following compounds in order of increasing acidity, and then rank their conjugate bases in order of increasing basicity.
Chapter 2 Solutions
ORGANIC CHEMISTRY - LOOSELEAF W/CONNECT
Ch. 2.1 - a. Which compounds are Bronsted-Lowry acids:...Ch. 2.2 - a. Draw the conjugate acid of each base:...Ch. 2.2 - Label each statement as True or False.
a. is the...Ch. 2.2 - Decide which compound is the acid and which is the...Ch. 2.2 - Draw the products formed from the acid-base...Ch. 2.3 - Which compound in each pair is the stronger acid?...Ch. 2.3 - Use a calculator when necessary to answer the...Ch. 2.3 - Rank the conjugate bases of each of group of acids...Ch. 2.3 - Problem-2.10 Considers two acids: (formic acid,)...Ch. 2.3 - Prob. 11P
Ch. 2.4 - Draw the products of each reaction and determine...Ch. 2.4 - Prob. 13PCh. 2.5 - Without reference to a pKa table, decide which...Ch. 2.5 - Rank the labeled H atoms in the following compound...Ch. 2.5 - Which hydrogen in pseudoephedrine, the nasal...Ch. 2.5 - Which compound in each pair is the stronger acid?...Ch. 2.5 - Glycolic acid, HOCH2CO2H, is the simplest member...Ch. 2.5 - Explain the apparent paradox. HBr is a stronger...Ch. 2.5 - The CH bond in acetone, (CH3)2C=O, has a pKa of...Ch. 2.5 - Prob. 23PCh. 2.5 - For each pair of compounds: [1] Which indicated H...Ch. 2.5 - Rank the compounds in each group in order of...Ch. 2.5 - Prob. 26PCh. 2.5 - Prob. 27PCh. 2.6 - Prob. 28PCh. 2.7 - Problem 2.29
Compounds like amphetamine that...Ch. 2.8 - Problem 2.30 Which species are Lewis bases?
a. b....Ch. 2.8 - Which species are Lewis acids?
a. b. c. d.
Ch. 2.8 - For each reaction, label the Lewis acid and base....Ch. 2.8 - Prob. 33PCh. 2.8 - Prob. 34PCh. 2.8 - Label the Lewis acid and base. Use curved arrow...Ch. 2 - 2.36 Propranolol is an antihypertensive agent—that...Ch. 2 - 2.37 Amphetamine is a powerful stimulant of the...Ch. 2 - 2.38 What is the conjugate acid of each base?
a....Ch. 2 - 2.39 What is the conjugate base of each acid?
a....Ch. 2 - Draw the products of each proton transfer...Ch. 2 - Prob. 43PCh. 2 - What is Ka for each compound? Use a calculator...Ch. 2 - What is the pKa for each compound? a. b. c.Ch. 2 - Which of the following bases are strong enough to...Ch. 2 - Draw the products of each reaction. Use the pKa...Ch. 2 - a. What is the conjugate acid of A? b. What is the...Ch. 2 - Dimethyl ether (CH3OCH3) and ethanol (CH3CH2OH)...Ch. 2 - 2.59 Atenolol is a (beta) blocker, a drug used to...Ch. 2 - 2.60 Use the principles in Section 2.5 to label...Ch. 2 - 2.61 Label the three most acidic hydrogen atoms in...Ch. 2 - Prob. 66PCh. 2 - 2.63 Classify each compound as a Lewis base, a...Ch. 2 - 2.64 Classify each species as a Lewis acid, a...Ch. 2 - Label the Lewis acid and Lewis base in each...Ch. 2 - 2.66 Draw the products of each Lewis acid-base...Ch. 2 - Prob. 71PCh. 2 - 2.68 Answer the following questions about the four...Ch. 2 - Prob. 73PCh. 2 - 2.70 Hydroxide can react as a Brønsted-Lowry base...Ch. 2 - 2.71 Answer the following questions about esmolol,...Ch. 2 - Prob. 76PCh. 2 - Prob. 77PCh. 2 - Prob. 82P
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- 1. Rank the following molecules in terms of increasing acidity. Explain your rankings in terms of stability of the corresponding conjugate base. OH HO, SH NaNH2 =H HO,arrow_forward3, Which of the molecules drawn below is most acidic? Draw the conjugate base and explain thoroughly. वे देई d a C barrow_forwardWhich of the following compounds would be the strongest base?arrow_forward
- Which of the following has the lowest pka value? Hint: a methyl group is an electron donating group which can destabilize the negative charge of the conjugate base. * I CH,COOH I HCOOH 1 (CH),CH – COOH II CH,CH,COH IVarrow_forwardThe C-H bond in acetone, (CH3)C=O, has a pką of 19.2. Draw two resonance structures for its conjugate base. Then, explain why acetone is much more acidic than propane, CH;CH,CH3 (pKa = 50). %3Darrow_forwarda) Identify the acidic proton for each of the following molecules: HO OH SH H t t NH₂ b) Rank the compounds in order of increasing acidity using pka values. c) In each case, draw the structure of the conjugate base.arrow_forward
- Rank the following compounds in order of increasing acidity (1 = least acidic, 3 = most acidic) and in the space provided use resonance (of the conjugate base) to explain why the compound you have labelled “3” is the most acidic.arrow_forwardThe higher the pK, value the weaker the acid. True Falsearrow_forwardRank the following compounds in their correct order of acidity. 1=Most acidic and 4=least acidic.arrow_forward
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