Organic Chemistry (9th Edition)
9th Edition
ISBN: 9780321971371
Author: Leroy G. Wade, Jan W. Simek
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 2.6A, Problem 2.9P
Ammonia appears in Table 2-2 as both an acid and a conjugate base.
- a. Explain how ammonia can act as both an acid and a base Which of these roles does it commonly fill in aqueous solutions?
- b. Show how water can serve as both an acid and a base.
- c. Calculate Ka and pKa for the hydromum ion, H3O+
- d. Show how methanol (CH3OH) can serve as both an acid and a base. Write an equation for the reaction of methanol with sulfuric acid.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Chemistry
beginning with arecoline (pKa:7.6), Show the acid dissociation equilibrium reaction for arecoline in water. Label conjugate base and weak acid in this reaction.
Saliva has a pH of 6.8, Calculate the percentage of arecoline in the HA form in typical saliva. Betel nut is usually chewed with a small amount of slaked lime Ca(OH)2. Explain why slaked lime improves the bioavailability and thus the effects of arecoline.
A.) What is the pH of a 0.25 M solution of sodium propionate, NaC3H5O2, at 25°C? (For propionic acid, HC3H5O2, Ka = 1.3 x 10-5 at 25°C.)
B.) What is the pH of a 0.79 M solution of methylamine (CH3NH2, Kb = 4.4 x 10–4) at 25oC?
Methylamine CH3NH2 is a weak base with pKb =3.36. What is the value of Ka for thetrimethylammonium ion, CH3NH3+?A) Ka = 4.4×10–4 B) Ka = 10.64 C) Ka = 2.29×10–11 D) Ka = 2.88×10–13
Chapter 2 Solutions
Organic Chemistry (9th Edition)
Ch. 2.1A - Prob. 2.1PCh. 2.1B - The NF bond is more polar than the NH bond: but...Ch. 2.1B - For each of the following compounds 1. Draw the...Ch. 2.1B - Two isomers of 1,2-dichloroethene are known One...Ch. 2.2C - Prob. 2.5PCh. 2.2C - Prob. 2.6PCh. 2.3 - Prob. 2.7PCh. 2.4 - Calculate the pH of the following solutions a....Ch. 2.6A - Ammonia appears in Table 2-2 as both an acid and a...Ch. 2.7 - Write equations for the following acid-base...
Ch. 2.7 - Ethanol, methylamine. and acetic acid are all...Ch. 2.8 - Prob. 2.12PCh. 2.10 - Write equations for the following acid-base...Ch. 2.10 - Rank the following acids in decreasing order of...Ch. 2.11 - Prob. 2.15PCh. 2.11 - Prob. 2.16PCh. 2.11 - Consider each pair of bases and explain which one...Ch. 2.12 - Which is a stronger base ethoxide ion or acetate...Ch. 2.12 - Prob. 2.19PCh. 2.12 - Prob. 2.20PCh. 2.12 - Prob. 2.21PCh. 2.12 - Choose the more basic member of each pair of...Ch. 2.14 - Prob. 2.23PCh. 2.15D - Classify the following hydrocarbons and draw a...Ch. 2.16D - Prob. 2.25PCh. 2.17C - Draw a Lewis structure and classify each of the...Ch. 2.17C - Circle the functional groups in the following...Ch. 2 - The CN triple bond in acetonitrile has a dipole...Ch. 2 - Prob. 2.29SPCh. 2 - Sulfur dioxide has a dipole moment of 1.60 D....Ch. 2 - Which of the following pure compounds can form...Ch. 2 - Predict which member of each pair is more soluble...Ch. 2 - Prob. 2.33SPCh. 2 - Prob. 2.34SPCh. 2 - Predict which compound in each pair has the higher...Ch. 2 - All of the following compounds can react as acids...Ch. 2 - Rank the following species in order of increasing...Ch. 2 - Rank the following species in order of increasing...Ch. 2 - The Ka of phenylacetic acid is 5 2 105, and the...Ch. 2 - The following compound can become protonated on...Ch. 2 - The following compounds are listed in increasing...Ch. 2 - Prob. 2.42SPCh. 2 - Prob. 2.43SPCh. 2 - Compare the relative acidity of 1-molar aqueous...Ch. 2 - The following compounds can all react as acids. a....Ch. 2 - The following compounds can all react as bases. a....Ch. 2 - The following compounds can all react as acids. a....Ch. 2 - Prob. 2.48SPCh. 2 - Methyllithium (CH3Li) is often used as a base in...Ch. 2 - Label the reactants in these acid-base reactions...Ch. 2 - In each reaction, label the reactants as Lewis...Ch. 2 - Prob. 2.52SPCh. 2 - Each of these compounds can react as a nucleophile...Ch. 2 - Prob. 2.54SPCh. 2 - Give a definition and an example for each class of...Ch. 2 - Circle the functional groups in the following...Ch. 2 - Prob. 2.57SP
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Place the species in each of the following groups in order of increasing acid strength. a. H2O, H2S, H2Se (bond energies: HO, 467 kJ/mol; HS, 363 kJ/mol; HSe, 276 kJ/mol) b. CH3CO2H, FCH2CO2H, F2CHCO2H, F3CCO2H c. NH4+, HONH3+ d. NH4+, PH4+ (bond energies: NH, 391 kJ/mol; PH, 322 kJ/mol) Give reasons for the orders you chose.arrow_forwardCalculate the pH at 25°C of a 0.43M solution of sodium hypochlorite (NaClO). Note that hypochlorous acid (HClO) is a weak acid with a pKa of 7.50 Round your answer to 1 decimal place.arrow_forwardWhat is Kb for the conjugate base of CH₃COOH (Ka = 1.8 × 10⁻⁵)?arrow_forward
- 1. Calculate the pH of 0.10 M solution of hypochlorous acid, HOCl, Ka = 2.9 x 10-8 (Weak acid) HOCl ⇌ H+ + ClO? 2. What is the pH of a 0.080 M solution of the weak base pyridine (C5H5N; Kb = 1.7 x 10-9 )? (Weak base) C5H5N + H2O ⇌ OH- + HC5H5N +arrow_forwardMethylamine, CH3NH2, has a Kb of 4.4 x 10-4. What is the pH of a 0.54 M solution of methylamine? Your answer should be to two places past the decimal. Calculate the pH of a 0.21 M solution of hydrocyanic acid (HCN), which has a pKa of 9.31. Your answer should have 3 significant figures (i.e. 9.99).arrow_forwardFor each value of Ka, calculate the corresponding value of pKa. Which compound is the stronger acid? Q.) chloroacetic acid, Ka = 1.38 X 10-3arrow_forward
- True or False. Write TRUE if the statement is correct and FALSE if it is incorrect. ___________1. The acidity of the solution is higher with higher pH. ___________2. pH is the measure of the alkalinity of solution. ___________3. The strength of acids and bases depends on their ionization constant. ___________4. The higher Ka or Kb, the stronger is the acid or base. ___________5. Given HA yields H+ + A-, its = [??] /[?+][?−]arrow_forwardWhich of the following two acids has the stronger conjugate base? Formic acid, Ka = 1.80 x 10–4 Hypochlorous acid, Ka = 3.0 x 10–8 Formic acid, because it has a smaller Ka Formic acid, because it has a larger Ka The strength of the conjugate base cannot be obtained from the information given. Hypochlorous acid, because it has a smaller Ka Hypochlorous acid, because it has a larger Kaarrow_forwardFor each value of pKa, calculate the corresponding value of Ka. Which compound is the stronger acid? Q.) Ethanol, pKa =15.9arrow_forward
- What is the pH of a solution that is 0.31 M in ethylammonium chloride? The Kb(ethylamine) = 4.3 x 10−4 Report your answer to 2 decimal places.arrow_forwardCalculate the ph of 0.24m sr(oh)2 aq 0.05m nh3 (kb=1.8*20^-5)arrow_forwardbeginning with arecoline (pKa:7.6), Show the acid dissociation equilibrium reaction for arecoline in water. Label conjugate base and weak acid in this reaction. Saliva has a pH of 6.8, Calculate the percentage of arecoline in the HA form in typical saliva. Betel nut is usually chewed with a small amount of slaked lime Ca(OH)2. Explain why slaked lime improves the bioavailability and thus the effects of arecoline.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningChemistry: An Atoms First ApproachChemistryISBN:9781305079243Author:Steven S. Zumdahl, Susan A. ZumdahlPublisher:Cengage Learning
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
Chemistry: The Molecular Science
Chemistry
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:Cengage Learning
Chemistry: An Atoms First Approach
Chemistry
ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
Publisher:Cengage Learning
Chemistry
Chemistry
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
General Chemistry | Acids & Bases; Author: Ninja Nerd;https://www.youtube.com/watch?v=AOr_5tbgfQ0;License: Standard YouTube License, CC-BY