ORG.CHEMISTRY W/ACCESS+MODEL KIT PKG
5th Edition
ISBN: 9781260701128
Author: SMITH
Publisher: MCG
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Textbook Question
Chapter 2, Problem 2.23P
Acetonitrile
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Acetonitrile (CH3CN) has a pKa of 25, making it more acidic than many other compounds having only C – H bonds. Draw Lewis structures for acetonitrile and its conjugate base. Use resonance structures to account for the acidity of acetonitrile.
Given that acetic acid has Ka = 1.8 x 10–5, what is the pH of a solution that contains the molar ratio of conjugate base-to-acid: [CH3CO2–]/[CH3CO2H] = 10/1?
2-Methylvaleric acid, CH3(CH2)2CH(CH3)COOH, has a pKa =4.9. Drawthe skeletal structure of the conjugate base of 2-Methylvaleric acid and give the pH abovewhich 90% of the compound will be in this conjugate base form.
Chapter 2 Solutions
ORG.CHEMISTRY W/ACCESS+MODEL KIT PKG
Ch. 2 - a. Which compounds are Bronsted-Lowry acids:...Ch. 2 - a. Draw the conjugate acid of each base:...Ch. 2 - Label each statement as True or False.
a. is the...Ch. 2 - Label the acid and base, and the conjugate acid...Ch. 2 - Decide which compound is the acid and which is the...Ch. 2 - Draw the products formed from the acid-base...Ch. 2 - Which compound in each pair is the stronger acid?...Ch. 2 - Use a calculator when necessary to answer the...Ch. 2 - Rank the conjugate bases of each of group of acids...Ch. 2 - Problem-2.10 Considers two acids: (formic acid,)...
Ch. 2 - Prob. 2.11PCh. 2 - Draw the products of each reaction and determine...Ch. 2 - Prob. 2.13PCh. 2 - Without reference to a pKa table, decide which...Ch. 2 - Rank the labeled H atoms in the following compound...Ch. 2 - Which hydrogen in each molecule is most...Ch. 2 - Which hydrogen in pseudoephedrine, the nasal...Ch. 2 - Which compound in each pair of isomers is the...Ch. 2 - Which compound in each pair is the stronger acid?...Ch. 2 - Glycolic acid, HOCH2CO2H, is the simplest member...Ch. 2 - Explain the apparent paradox. HBr is a stronger...Ch. 2 - The CH bond in acetone, (CH3)2C=O, has a pKa of...Ch. 2 - Acetonitrile (CH3CN) has a pKa of 25, making it...Ch. 2 - For each pair of compounds: [1] Which indicated H...Ch. 2 - Rank the compounds in each group in order of...Ch. 2 - Which proton in each of the following drugs is...Ch. 2 - Which anion A or B is the stronger base? ABCh. 2 - Prob. 2.28PCh. 2 - Problem 2.29
Compounds like amphetamine that...Ch. 2 - Problem 2.30 Which species are Lewis bases?
a. b....Ch. 2 - Which species are Lewis acids?
a. b. c. d.
Ch. 2 - For each reaction, label the Lewis acid and base....Ch. 2 - Prob. 2.33PCh. 2 - Prob. 2.34PCh. 2 - 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 - 2.40 Draw the products formed from the acid-base...Ch. 2 - Draw the products formed from the acid-base...Ch. 2 - Draw the products of each proton transfer...Ch. 2 - Prob. 2.43PCh. 2 - Prob. 2.44PCh. 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 - Which compounds can be deprotonated by OH, so that...Ch. 2 - Draw the products of each reaction. Use the pKa...Ch. 2 - Rank the following compounds in order of...Ch. 2 - 2.51 Rank the following ions in order of...Ch. 2 - Prob. 2.52PCh. 2 - Prob. 2.53PCh. 2 - 2.54 The of three bonds is given below.
a. For...Ch. 2 - a. What is the conjugate acid of A? b. What is the...Ch. 2 - 2.56 Draw the structure of a constitutional isomer...Ch. 2 - 2.57 Many drugs are Bronsted-Lowry acids or...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. 2.62PCh. 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. 2.67PCh. 2 - 2.68 Answer the following questions about the four...Ch. 2 - Prob. 2.69PCh. 2 - 2.70 Hydroxide can react as a Brønsted-Lowry base...Ch. 2 - 2.71 Answer the following questions about esmolol,...Ch. 2 - 2.72 DBU, is a base we will encounter in...Ch. 2 - 2.73 Molecules like acetamide can be protonated...Ch. 2 - Prob. 2.74PCh. 2 - Prob. 2.75PCh. 2 - 2.76 Write a stepwise reaction sequence using...Ch. 2 - Prob. 2.77PCh. 2 - 2.78 Which compound, M or N, is the stronger acid?...
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- Find the value of Kb for the conjugate base of the following organic acids. (a) picric acid used in the manufacture of explosives; Ka = 0.16 (b) trichloroacetic acid used in the treatment of warts; Ka = 0.20arrow_forwardAcid-Base Equilibria Many factors contribute to the acidity of organic compounds. Electronegativity, resonance, induction, hybridization, aromaticity, and atomic size, all play a role. In the following comparisons, you are asked to identify the factor(s) that would be most important to analyze when predicting relative acidity, and then to predict the trend in acidity and pKa values. For each of the following pairs of compounds answer the following two multiple-choice questions. 1. What factor(s) are the most important to consider when predicting the relative acidity of the two compounds? a. Electronegativity of the atom possessing the hydrogen. b. Resonance stabilization of the anionic conjugate base. c. Inductive stabilization of the anionic conjugate base. d. Hybridization of the atom possessing the hydrogen. e. The atomic size of the atom possessing the hydrogen.arrow_forwardIf the pKa of a weak acid HA is 3.84, what is the pkb of its conjugate base A-arrow_forward
- When added to water, ethylamine undergoes the following reaction: C2H5NH2 + H2O C2H5NH3+ + OH- Is ethylamine an acid or a base in this reaction? Strong or weak? How do you know? 6. Name Ca(OH)2 and write its ionization equation.arrow_forwardWrite the conjugate base of C₆H₅NH₂.arrow_forwardWhich of the following two acids has the stronger conjugate base? Nitrous acid, Ka = 7.1 x 10–4 Phenol, Ka = 1.0 x 10–10 The strength of the conjugate base cannot be obtained from the information given. Nitrous acid, because it has a larger Ka value. Nitrous acid, because it has a smaller Ka value. Phenol, because it has a larger Ka value. Phenol, because it has a smaller Ka value.arrow_forward
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