Chemistry
9th Edition
ISBN: 9781133611097
Author: Steven S. Zumdahl
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 14, Problem 11ALQ
Acids and bases can be thought of as chemical opposites (acids are proton donors, and bases are proton acceptors). Therefore, one might think that Ka = 1/Kb. Why isn’t this the case? What is the relationship between Ka and Kb? Prove it with a derivation.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Please send me the question in 30 minutes it's very urgent plz
CH3CH2COOH
Draw the Lewis structure of the acid and mark the acidic hydrogen with an asterisk (*).
Draw a Lewis structure of the conjugate base of the acid.
Suppose the acid is neutralized with a strong base.
a) Which of the two structures you drew in 6 and 7 would be the predominant form of the species at a pH well above that at the equivalence point?
b) Which of the two structures would be the predominant form of the species at a very low pH, well below that at the equivalence point and similar to the pH near the start of the titration?
c) At what point in the titration, if any, would there be equal amounts of the two forms?
Percent lonization
Percent ionization for a weak acid (HA) is determined by the following
formula:
Percent ionization =
HA ionized
x 100%
[HA] initial
For strong acids, ionization is nearly complete
(100%) at most concentrations. However, for weak acids, the percent
ionization changes significantly with concentration. The more diluted the
acid is, the greater percent ionization.
A certain weak acid, HA, has a K₂ value of 2.1x10-7.
Part A
Calculate the percent ionization of HA in a 0.10 M solution.
Express your answer as a percent using two significant figures.
▸ View Available Hint(s)
V | ΑΣΦ 3
Submit
▾ Part B
Previous Answers
* Incorrect; Try Again; 5 attempts remaining
P
IV ΑΣΦ 1
Submit
?
Calculate the percent ionization of HA in a 0.010 M solution.
Express your answer as a percent using two significant figures.
▸ View Available Hint(s)
?
%
Review | Con
Chapter 14 Solutions
Chemistry
Ch. 14 - Define each of the following: a. Arrhenius acid b....Ch. 14 - Define or illustrate the meaning of the following...Ch. 14 - Define or illustrate the meaning of the following...Ch. 14 - How is acid strength related to the value of Ka?...Ch. 14 - Two strategies are followed when solving for the...Ch. 14 - Two strategies are also followed when solving for...Ch. 14 - Table 13-4 lists the stepwise Ka values for some...Ch. 14 - For conjugate acidbase pairs, how are Ka and Kb...Ch. 14 - What is a salt? List some anions that behave as...Ch. 14 - For oxyacids, how does acid strength depend on a....
Ch. 14 - Consider two beakers of pure water at different...Ch. 14 - Differentiate between the terms strength and...Ch. 14 - Sketch two graphs: (a) percent dissociation for...Ch. 14 - Consider a solution prepared by mixing a weak acid...Ch. 14 - Prob. 5ALQCh. 14 - Consider two separate aqueous solutions: one of a...Ch. 14 - You are asked to calculate the H+ concentration in...Ch. 14 - Consider a solution prepared by mixing a weak acid...Ch. 14 - Consider a solution formed by mixing 100.0 mL of...Ch. 14 - A certain sodium compound is dissolved in water to...Ch. 14 - Acids and bases can be thought of as chemical...Ch. 14 - Consider two solutions of the salts NaX(aq) and...Ch. 14 - What is meant by pH? True or false: A strong acid...Ch. 14 - Why is the pH of water at 25C equal to 7.00?Ch. 14 - Can the pH of a solution be negative? Explain.Ch. 14 - Is the conjugate base of a weak acid a strong...Ch. 14 - Match the following pH values: 1, 2, 5, 6, 6.5, 8,...Ch. 14 - The salt BX, when dissolved in water, produces an...Ch. 14 - Anions containing hydrogen (for example, HCO3 and...Ch. 14 - Which of the following conditions indicate an...Ch. 14 - Which of the following conditions indicate a basic...Ch. 14 - Why is H3O+ the strongest acid and OH the...Ch. 14 - How many significant figures are there in the...Ch. 14 - In terms of orbitals and electron arrangements,...Ch. 14 - Consider the autoionization of liquid ammonia:...Ch. 14 - The following are representations of acidbase...Ch. 14 - Give three example solutions that fit each of the...Ch. 14 - Prob. 28QCh. 14 - Prob. 29QCh. 14 - Which of the following statements is(are) true?...Ch. 14 - Consider the following mathematical expressions....Ch. 14 - Consider a 0.10-M H2CO3 solution and a 0.10-M...Ch. 14 - Of the hydrogen halides, only HF is a weak acid....Ch. 14 - Explain why the following are done, both of which...Ch. 14 - Write balanced equations that describe the...Ch. 14 - Write the dissociation reaction and the...Ch. 14 - For each of the following aqueous reactions,...Ch. 14 - For each of the following aqueous reactions,...Ch. 14 - Classify each of the following as a strong acid or...Ch. 14 - Consider the following illustrations: Which beaker...Ch. 14 - Use Table 13-2 to order the following from the...Ch. 14 - Use Table 13-2 to order the following from the...Ch. 14 - You may need Table 13-2 to answer the following...Ch. 14 - You may need Table 13-2 to answer the following...Ch. 14 - Calculate the [OH] of each of the following...Ch. 14 - Calculate the [H+] of each of the following...Ch. 14 - Values of Kw as a function of temperature are as...Ch. 14 - At 40.C the value of Kw is 2.92 1014. a....Ch. 14 - Calculate the [OH] of each of the following...Ch. 14 - Calculate [H+] and [OH] for each solution at 25C....Ch. 14 - Fill in the missing information in the following...Ch. 14 - Fill in the missing information in the following...Ch. 14 - Prob. 53ECh. 14 - The pOH of a sample of baking soda dissolved in...Ch. 14 - What are the major species present in 0.250 M...Ch. 14 - A solution is prepared by adding 50.0 mL of 0.050...Ch. 14 - Calculate the pH of each of the following...Ch. 14 - Calculate the pH of each of the following...Ch. 14 - Calculate the concentration of an aqueous HI...Ch. 14 - Calculate the concentration of an aqueous HBr...Ch. 14 - How would you prepare 1600 mL of a pH = 1.50...Ch. 14 - A solution is prepared by adding 50.0 mL...Ch. 14 - What are the major species present in 0.250 M...Ch. 14 - What are the major species present in 0.250 M...Ch. 14 - Calculate the concentration of all species present...Ch. 14 - For propanoic acid (HC3H5O2, Ka = 1.3 105),...Ch. 14 - A solution is prepared by dissolving 0.56 g...Ch. 14 - Monochloroacetic acid, HC2H2ClO2, is a skin...Ch. 14 - A typical aspirin tablet contains 325 mg...Ch. 14 - A solution is made by adding 50.0 mL of 0.200 M...Ch. 14 - Calculate the percent dissociation of the acid in...Ch. 14 - Using the Ka values in Table 14.2, calculate the...Ch. 14 - A 0.15-M solution of a weak acid is 3.0%...Ch. 14 - An acid HX is 25% dissociated in water. If the...Ch. 14 - Trichloroacetic acid (CCl3CO2H) is a corrosive...Ch. 14 - The pH of a 0.063-M solution of hypobromous acid...Ch. 14 - A solution of formic acid (HCOOH, Ka = 1.8 104)...Ch. 14 - A typical sample of vinegar has a pH of 3.0....Ch. 14 - One mole of a weak acid HA was dissolved in 2.0 L...Ch. 14 - You have 100.0 g saccharin, a sugar substitute,...Ch. 14 - Write the reaction and the corresponding Kb...Ch. 14 - Write the reaction and the corresponding Kb...Ch. 14 - Prob. 85ECh. 14 - Use Table 14.3 to help order the following acids...Ch. 14 - Use Table 14.3 to help answer the following...Ch. 14 - Use Table 14.3 to help answer the following...Ch. 14 - Calculate the pH of the following solutions. a....Ch. 14 - Calculate [OH], pOH, and pH for each of the...Ch. 14 - What are the major species present in 0.015 M...Ch. 14 - What are the major species present in the...Ch. 14 - What mass of KOH is necessary to prepare 800.0 mL...Ch. 14 - Calculate the concentration of an aqueous Sr(OH)2...Ch. 14 - What are the major species present in a 0.150-M...Ch. 14 - For the reaction of hydrazine (N2H4) in water,...Ch. 14 - Prob. 97ECh. 14 - Calculate the pH of a 0.20-M C2H5NH2 solution (Kb...Ch. 14 - Calculate the pH of a 0.050-M (C2H5)2NH...Ch. 14 - What is the percent ionization in each of the...Ch. 14 - Calculate the percentage of pyridine (C5H5N) that...Ch. 14 - The pH of a 0.016-M aqueous solution of...Ch. 14 - Calculate the mass of HONH2 required to dissolve...Ch. 14 - Write out the stepwise Ka reactions for the...Ch. 14 - Write out the stepwise Ka reactions for citric...Ch. 14 - A typical vitamin C tablet (containing pure...Ch. 14 - Arsenic acid (H3AsO4) is a triprotic acid with Ka1...Ch. 14 - Calculate the pH and [S2] in a 0.10-M H2S...Ch. 14 - Calculate [CO32] in a 0.010-M solution of CO2 in...Ch. 14 - Calculate the pH of a 2.0-M H2SO4 solution.Ch. 14 - Calculate the pH of a 5.0 103-M solution of...Ch. 14 - Arrange the following 0.10 M solutions in order of...Ch. 14 - Arrange the following 0.10 M solutions in order...Ch. 14 - Given that the Ka value for acetic acid is 1.8 ...Ch. 14 - The Kb values for ammonia and methylamine are 1.8 ...Ch. 14 - Determine [OH], [H+], and the pH of each of the...Ch. 14 - Calculate the concentrations of all species...Ch. 14 - Calculate the pH of each of the following...Ch. 14 - Calculate the pH of each of the following...Ch. 14 - Sodium azide (NaN3) is sometimes added to water to...Ch. 14 - Papaverine hydrochloride (abbreviated papH+Cl;...Ch. 14 - An unknown salt is either NaCN, NaC2H3O2, NaF,...Ch. 14 - Consider a solution of an unknown salt having the...Ch. 14 - A 0.050-M solution of the salt NaB has a pH of...Ch. 14 - A 0.20-M sodium chlorobenzoate (NaC7H4ClO2)...Ch. 14 - Prob. 127ECh. 14 - Prob. 128ECh. 14 - Are solutions of the following salts acidic,...Ch. 14 - Are solutions of the following salts acidic,...Ch. 14 - Place the species in each of the following groups...Ch. 14 - Place the species in each of the following groups...Ch. 14 - Place the species in each of the following groups...Ch. 14 - Using your results from Exercise 133, place the...Ch. 14 - Will the following oxides give acidic, basic, or...Ch. 14 - Will the following oxides give acidic, basic, or...Ch. 14 - Identify the Lewis acid and the Lewis base in each...Ch. 14 - Identify the Lewis acid and the Lewis base in each...Ch. 14 - Aluminum hydroxide is an amphoteric substance. It...Ch. 14 - Zinc hydroxide is an amphoteric substance. Write...Ch. 14 - Would you expect Fe3+ or Fe2+ to be the stronger...Ch. 14 - Prob. 142ECh. 14 - A 10.0-mL sample of an HCl solution has a pH of...Ch. 14 - Which of the following represent conjugate...Ch. 14 - A solution is tested for pH and conductivity as...Ch. 14 - The pH of human blood is steady at a value of...Ch. 14 - Hemoglobin (abbreviated Hb) is a protein that is...Ch. 14 - A 0.25-g sample of lime (CaO) is dissolved in...Ch. 14 - At 25C, a saturated solution of benzoic acid (Ka =...Ch. 14 - Calculate the pH of an aqueous solution containing...Ch. 14 - Acrylic acid (CH29CHCO2H) is a precursor for many...Ch. 14 - Classify each of the following as a strong acid,...Ch. 14 - The following illustration displays the relative...Ch. 14 - Quinine (C20H24N2O2) is the most important...Ch. 14 - Codeine (C18H21NO3) is a derivative of morphine...Ch. 14 - A codeine-containing cough syrup lists codeine...Ch. 14 - Prob. 157AECh. 14 - Rank the following 0.10 M solutions in order of...Ch. 14 - Is an aqueous solution of NaHSO4 acidic, basic, or...Ch. 14 - Calculate the value for the equilibrium constant...Ch. 14 - Prob. 161AECh. 14 - For solutions of the same concentration, as acid...Ch. 14 - Prob. 163CWPCh. 14 - Consider a 0.60-M solution of HC3H5O3, lactic acid...Ch. 14 - Consider a 0.67-M solution of C2H5NH2 (Kb = 5.6 ...Ch. 14 - Rank the following 0.10 M solutions in order of...Ch. 14 - Consider 0.25 M solutions of the following salts:...Ch. 14 - Calculate the pH of the following solutions: a....Ch. 14 - Consider 0.10 M solutions of the following...Ch. 14 - The pH of 1.0 108 M hydrochloric acid is not...Ch. 14 - Calculate the pH of a 1.0 107-M solution of NaOH...Ch. 14 - Calculate [OH] in a 3.0 107-M solution of Ca(OH)2.Ch. 14 - Consider 50.0 mL of a solution of weak acid HA (Ka...Ch. 14 - Prob. 174CPCh. 14 - Calculate the pH of a 0.200-M solution of C5H5NHF....Ch. 14 - Determine the pH of a 0.50-M solution of NH4OCl....Ch. 14 - Calculate [OH] in a solution obtained by adding...Ch. 14 - What mass of NaOH(s) must be added to 1.0 L of...Ch. 14 - Consider 1000. mL of a 1.00 104-M solution of a...Ch. 14 - Calculate the mass of sodium hydroxide that must...Ch. 14 - Consider the species PO43, HPO42, and H2PO4. Each...Ch. 14 - Calculate the pH of a 0.10-M solution of sodium...Ch. 14 - Will 0.10 M solutions of the following salts be...Ch. 14 - a. The principal equilibrium in a solution of...Ch. 14 - A 0.100-g sample of the weak acid HA (molar mass =...Ch. 14 - A sample containing 0.0500 mole of Fe2(SO4)3 is...Ch. 14 - A 2.14 g sample of sodium hypoiodite is dissolved...Ch. 14 - Isocyanic acid (HNCO) can be prepared by heating...Ch. 14 - A certain acid, HA, has a vapor density of 5.11...Ch. 14 - An aqueous solution contains a mixture of 0.0500 M...Ch. 14 - For the following, mix equal volumes of one...
Additional Science Textbook Solutions
Find more solutions based on key concepts
45. Calculate the mass of nitrogen dissolved at room temperature in an 80.0-L home aquarium. Assume a total pre...
Chemistry: Structure and Properties (2nd Edition)
How could you separate a mixture of the following compounds? The reagents available to you are water, either, 1...
Organic Chemistry (8th Edition)
Label each statement about the polynucleotide ATGGCG as true or false. The polynucleotide has six nucleotides. ...
General, Organic, and Biological Chemistry - 4th edition
An obese 55-year-old woman consults her physician about minor chest pains during exercise. Explain the physicia...
Biology: Life on Earth with Physiology (11th Edition)
To test your knowledge, discuss the following topics with a study partner or in writing ideally from memory. Th...
HUMAN ANATOMY
Gregor Mendel never saw a gene, yet he concluded that some inherited factors were responsible for the patterns ...
Campbell Essential Biology (7th Edition)
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
- 12.62 Write the formula of the conjugate acid of each of the following bases, (a) OH-, (b) NHj, (c) CHjNHt, (d) HPO/-, (e) CO.,2’arrow_forwardStudents are often surprised to learn that organic acids, such as acetic acid, contain OH groups. Actually, all oxyacids contain hydroxyl groups. Sulfuric acid, usually written as H2SO4, has the structural formula SO2(OH)2, where S is the central atom. Identify the acids whose structural formulas are shown below. Why do they behave as acids, while NaOH and KOH are bases? a. SO(OH)2 b. ClO2(OH) c. HPO(OH)2arrow_forwardWhat is a salt? List some anions that behave as weak bases in water. List some anions that have no basic properties in water. List some cations that behave as weak acids in water. List some cations that have no acidic properties in water. Using these lists, give some formulas for salts that have only weak base properties in water. What strategy would you use to solve for the pH of these basic salt solutions? Identify some salts that have only weak acid properties in water. What strategy would you use to solve for the pH of these acidic salt solutions? Identify some salts that have no acidic or basic properties in water (produce neutral solutions). When a salt contains both a weak acid ion and a weak base ion, how do you predict whether the solution pH is acidic, basic, or neutral?arrow_forward
- H. | || The percent ionization of chloroacetic acid is less than that of fluoroacetic acid. :*-C-C-ö-H The percent ionizations cannot be compared without knowing the concentrations of the two acids. The structure of haloacetic acids, XCH,COOH (where X is The percent ionizations cannot be compared without knowing the pH of the solution. either F, Cl, Br, or 1), is shown above. The dissociation constants and molar masses of four haloacetic acids are listed in the table below. The percent ionization of chloroacetic acid is greater than that of fluoroacetic acid. Acid pK. K. Molar Mass(g/mol) CLEAR ALL Fluoroacetic acid 2.59 2.57 x 10–3 78.0 Chloroacetic acid 2.87 1.35 x 10–3 94.5 Bromoacetic acid 2.90 1.26 x 10-3 138.9 lodoacetic acid 3.18 6.61 × 10-4 185.9 An aqueous solution contains small but equal concentrations of both chloroacetic and fluoroacetic acids. Which statement comparing the percent ionizations of the two acids in the solution is true? エーO-arrow_forwardWhat would be the hydronium ion concentration in a solution 0.100 M NaOH and 1.00 M NH3? (Hint: NaOH and NH3 are both bases. So there are two sources of hydroxide ions. NaOH is a strong base, but NH3 is weak so you will have to use Kb. Add them together, then plug the sum into the Kw equation to find hydronium, then find pH.)arrow_forwardpredicting the qualitative acid-base properties of salts Consider the following data on some weak acids and weak bases: name acetic acid acid hydrocyanic acid solution 0.1 M NaCN 0.1 M NH C 0.1 MHONH,Br Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' next to the solution that will have the lowest pH, a 2 next to the solution that will have the next lowest pH, and so on. 0.1 M KCH₂CO₂ K₁ formula HCH,CO₂ 1.8x10 HCN 4.9 × 10 10 pH choose one X Ű choose one choose one choose one base 3 Ċ K₂ name formula ammonia NH₂ 1.8×10 hydroxylamine HONH₂ 1.1×108arrow_forward
- 6. Draw two graphs for weak acid HA: (a) percent dissociation for HA versus the initial concentration of HA ([HA]o) (hint: assume [HA], as x and [H*]/[HA], as y). (b) the equilibrium concentration of H+ versus [HA]o. Explain both.arrow_forwardFrom the equilibrium concentrations given, calculate Ka for each of the weak acids and Kb for each of the weak bases.(a) CH3CO2H: [H3 O+] = 1.34 × 10−3 M;[CH3 CO2−] = 1.34 × 10−3 M;[CH3CO2H] = 9.866 × 10−2 M;(b) ClO−: [OH−] = 4.0 × 10−4 M;[HClO] = 2.38 × 10−5 M;[ClO−] = 0.273 M;(c) HCO2H: [HCO2H] = 0.524 M;[H3 O+] = 9.8 × 10−3 M;[HCO2−] = 9.8 × 10−3 M;(d) C6 H5 NH3+ : [C6 H5 NH3+] = 0.233 M;[C6H5NH2] = 2.3 × 10−3 M;[H3 O+] = 2.3 × 10−3 Marrow_forwardWe did an experiment in a lab. We tested for the strength of acids and bases using a conductivity test. Distilled water was used as one of the solutions. the litmus paper and phenolphthalein did not change color. It did not also conduct electricity. Hence it was assumed to be a nonelectrolyte therefore a neutral solution. However, upon searching the internet, it was found that water is not exactly acidic. A pH of 7 at 25°C represents PURE distilled water. Distilled water is considered to be slightly acidic because it absorbed carbon dioxide from the air. The pH of distilled water can range anywhere between 5.5 and 6.9, depending on how long it has been exposed to air. If this is true, then shouldn't the distilled water conduct electricity since acids conduct electricity? Yes or No? please provide an explanation and chemical equation if possible. thank you!arrow_forward
- Three acids found in food are lactic acid (LA) in milk products, oxalic acid (OA) in rhubarb, and malic acid (MA) in apples. The pk, values for these acids are LA = 3.88, OA = 1.23, and MA = 3.40. Which list has these acids in order of decreasing acid strength? O LA > OA > MA O LA > MA > OA MA > LA > OA OA > MA > LA OA > LA > MAarrow_forwardConsider the following data on some weak acids and weak bases: name hydrofluoric acid acid acetic acid solution 0.1MNHO 0.1 MC₂H₂Br 0.1 M Na Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' next to the solution that will have the lowest pH, a 2 next to the solution that will have the next lowest pH, and so on. K 0.1 MKCH₂CD₂ formula HE 6.8x10 HCH,CO₂ 1.8x10 PH choose one choose one choose one choose one base S K₁ name formula ammonia NH, 1.8×105 pyridine C,H₂N 1.7×10arrow_forwardConsider the following data on some weak acids and weak bases: acid base Ka 9. name formula name formula hypochlorous acid HCIO 8 3.0 x 10 ethylamine C2H;NH2 6.4 × 10 HCH3CO2 1.8 × 10 C3H;N |1.7× 10 -5 acetic acid pyridine alo Use this data to rank the following solutions in order of increasing pH. In other words, select a '1' next to the solution that will have the lowest pH, a '2' next to the solution that will have the next lowest pH, and so on. solution pH choose one v 0.1 М KCIO 0.1 M C5H5NHBR |choose one 0.1 M NaNO3 choose one 0.1 M NaCH3CO2 choose one varrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Chemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage LearningGeneral, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage Learning
- Introductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage LearningPrinciples of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage Learning
Chemistry: Principles and Practice
Chemistry
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Cengage Learning
General, Organic, and Biological Chemistry
Chemistry
ISBN:9781285853918
Author:H. Stephen Stoker
Publisher:Cengage Learning
Introductory Chemistry: A Foundation
Chemistry
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Principles of Modern Chemistry
Chemistry
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:Cengage Learning
General Chemistry | Acids & Bases; Author: Ninja Nerd;https://www.youtube.com/watch?v=AOr_5tbgfQ0;License: Standard YouTube License, CC-BY