Chemistry: Principles and Practice
3rd Edition
ISBN: 9780534420123
Author: Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
What is the pKa of benzoic acid?
What is the molar concentration of sodium benzoate (conjugate base)?
What is the molar concentration of benzoic acid (weak acid)?
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution
Trending nowThis is a popular solution!
Step by stepSolved in 3 steps
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
- Write the chemical equation and the expression for the equilibrium constant, and calculate Kb for the reaction of each of the following ions as a base. (a) sulfate ion (b) citrate ionarrow_forwardFor conjugate acidbase pairs, how are Ka and Kb related? Consider the reaction of acetic acid in water CH3CO2H(aq)+H2O(l)CH3CO2(aq)+H3O+(aq) where Ka = 1.8 105 a. Which two bases are competing for the proton? b. Which is the stronger base? c. In light of your answer to part b. why do we classify the acetate ion (CH3CO2) as a weak base? Use an appropriate reaction to justify your answer. In general, as base strength increases, conjugate acid strength decreases. Explain why the conjugate acid of the weak base NH3 is a weak acid. To summarize, the conjugate base of a weak acid is a weak base and the conjugate acid of a weak base is a weak acid (weak gives you weak). Assuming Ka for a monoprotic strong acid is 1 106, calculate Kb for the conjugate base of this strong acid. Why do conjugate bases of strong acids have no basic properties in water? List the conjugate bases of the six common strong acids. To tie it all together, some instructors have students think of Li+, K+, Rb+, Cs+, Ca2+, Sr2+, and Ba2+ as the conjugate acids of the strong bases LiOH, KOH. RbOH, CsOH, Ca(OH)2, Sr(OH)2, and Ba(OH)2. Although not technically correct, the conjugate acid strength of these cations is similar to the conjugate base strength of the strong acids. That is, these cations have no acidic properties in water; similarly, the conjugate bases of strong acids have no basic properties (strong gives you worthless). Fill in the blanks with the correct response. The conjugate base of a weak acid is a_____base. The conjugate acid of a weak base is a_____acid. The conjugate base of a strong acid is a_____base. The conjugate acid of a strong base is a_____ acid. (Hint: Weak gives you weak and strong gives you worthless.)arrow_forwardThe acid-dissociation constant of hydrocyanic acid (HCN) at 25.0°C is 4.9 x 10 10. What is the pH of an aqueous solution of 0.136 M sodium cyanide (NaCN)?arrow_forward
- In the laboratory, a general chemistry student measured the pH of a 0.470 M aqueous solution of methylamine, CH3NH2 to be 12.163. Use the information she obtained to determine the Kh for this base. Ку(еxperiment) = 6.53x10^_4 An error has been detected in your answer. Check for typos, miscalculations etc. before submitting your answer.arrow_forwardWhat is the pH of a solution prepared by mixing 55.00 mL of 0.10 M methylamine, CH3NH2, with 15.00 mL of 0.10 M methylammonium chloride, CH3NH3CI? Assume that the volume of the solutions are additive and that Kp = 4.4 x 104 for methylamine.arrow_forwardConsider an aqueous solution of 0.40 M phenol. If you add HCl to the phenol solution until the pH reaches 3.70, what will be the ratio of phenolate (the conjugate base of phenol) to phenol? Assume that the Ka for phenol is 1.0 x 10^-10.arrow_forward
- A solution is prepared at 25 °C that is initially 0.17M in trìmethylamine (CH,) N), a weak base with K = 7.4 × 10 *, and 0.20M in trimethylammonium ((CH,), NHCI). Calculate the pH of the solution. Round your answer to 2 decimal places. chloride pH =arrow_forward1.) Use the following acid or base dissociation constants to calculate the pH of the listed aqueous solutions. Acid Ка Base Kb hypochlorous acid, HCIO 4.0 x 10 8 methylamine, CH3NH2 5.0 x 104 hydrofluoric acid, HF 6.3х 104 pyridine, CSH5N 1.7 x 109 formic acid, HCOOH 1.8 x 104 ammonia, NH3 1.8 x 105 a.) pH of 0.155 M Ba(OH)2 b.) pH of 0.750 M hypochlorous acid, HCIO c.) pH of 0.215 M CH3NH3CI(aq)arrow_forwardYou are studying a clear solution and you added the pH indicator methyl violet. The colour range of the indicator methyl violet in a clear solution when changing from acidic to basic is yellow (pH 0) to blue purple (pH 1) to violet (pH 2). You initial pH of the solution when tested with a pH meter is O.2. You are going to add 250 drops of 0.1 M HCI. Please select the most appropriate answers to the following two questions. What is the initial colour of the solution at pH 0.2? What is the colour of the solution and what will the pH be after the addition of the HCI? Select 2 correct answer(s) The colour of the solution after the addition of HCI will be clear and the pH will be less than 0.2. The colour of the solution after the addition of HCI will be violet and the pH will be higher than 0.2.arrow_forward
- A0.1000M solution of ethanoic acid is only partially ionized. Using measurements of the pH of the solution, (H+] was determined to be 1.34 x 10 M. Calculate the acid dissociation constant of ethanoic acid.arrow_forwardThe temperature for each solution is carried out at approximately 297 K where K w =1.00×10 −14 0.85 g of hydrogen chloride (HCl) is dissolved in water to make 5.5 L of solution. What is the pH of the resulting hydrochloric acid solutionarrow_forwardA solution is prepared at 25 °C that is initially 0.22M in trimethylamine ((CH³)²N), a weak base with K = 7.4 × 104, and 0.27M in trimethylammonium ((CH,),NHCI). Calculate the pH of the solution. Round your answer to 2 decimal places. chloride pH = Śarrow_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 LearningChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
- Chemistry: An Atoms First ApproachChemistryISBN:9781305079243Author:Steven S. Zumdahl, Susan A. ZumdahlPublisher: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
Chemistry
Chemistry
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Chemistry: An Atoms First Approach
Chemistry
ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
Publisher:Cengage Learning