Principles of Chemistry: A Molecular Approach (3rd Edition)
3rd Edition
ISBN: 9780321971944
Author: Nivaldo J. Tro
Publisher: PEARSON
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Chapter 16, Problem 101E
What relative masses of demethyl
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It is desired to prepare a buffer solution with a pH equal to 10 with the ethylamine-ethylammonium chloride pair:
How many grams of ethylammonium chloride (C2H5NH3^+Cl^- ) should be added to 750 mL of ethylamine (C2H5NH2) 0.05 M to obtain this solution? Assume that the volume of the solution remains constant.
What is the pH of a buffer solution that is 0.20 M methyl amine, CH3NH2 and 0.18 M methylammonium chloride CH3NH2Cl? The Kb for CH3NH2 is 4.4x10-4. You do not need to solve the quadratic equation for this problem. Express your answer to two decimal places.
You are asked to prepare a pH = 4.00 buffer startingfrom 1.50 L of 0.0200 M solution of benzoic acid (C6H5COOH) and any amount you need of sodium benzoate(C6H5COONa). (a) What is the pH of the benzoic acidsolution prior to adding sodium benzoate? (b) How manygrams of sodium benzoate should be added to prepare thebuffer? Neglect the small volume change that occurs whenthe sodium benzoate is added.
Chapter 16 Solutions
Principles of Chemistry: A Molecular Approach (3rd Edition)
Ch. 16 - Prob. 16.1PCh. 16 - Prob. 16.1MPCh. 16 - Prob. 16.2PCh. 16 - Prob. 16.3PCh. 16 - Prob. 16.3MPCh. 16 - Prob. 16.4PCh. 16 - Prob. 16.4MPCh. 16 - Prob. 16.5PCh. 16 - Prob. 16.6PCh. 16 - Prob. 16.7P
Ch. 16 - For Practice 16.8 Calculate the molar solubility...Ch. 16 - Prob. 16.9PCh. 16 - Prob. 16.10PCh. 16 - For Practice 16.11
Which compound, FeCO3 or...Ch. 16 - Prob. 16.12PCh. 16 - For Practice 16.13
A 125.0-mL sample of solution...Ch. 16 - Prob. 1SAQCh. 16 - Prob. 2SAQCh. 16 - Prob. 3SAQCh. 16 - Prob. 4SAQCh. 16 - Prob. 5SAQCh. 16 - Prob. 6SAQCh. 16 - Prob. 7SAQCh. 16 - Prob. 8SAQCh. 16 - Prob. 9SAQCh. 16 - Prob. 10SAQCh. 16 - Prob. 11SAQCh. 16 - Prob. 12SAQCh. 16 - Prob. 13SAQCh. 16 - Prob. 14SAQCh. 16 - Prob. 15SAQCh. 16 - Prob. 1ECh. 16 - Prob. 2ECh. 16 - Prob. 3ECh. 16 - Prob. 4ECh. 16 - 5. Calculate the percent ionization of a 0.15 M...Ch. 16 - 6. Calculate the percent ionization of a 0.13 M...Ch. 16 - Prob. 7ECh. 16 - Prob. 8ECh. 16 - Prob. 9ECh. 16 - Prob. 10ECh. 16 - Prob. 11ECh. 16 - Prob. 12ECh. 16 - Prob. 13ECh. 16 - Prob. 14ECh. 16 - Prob. 15ECh. 16 - Prob. 16ECh. 16 - Prob. 17ECh. 16 - Prob. 18ECh. 16 - Prob. 19ECh. 16 - Prob. 20ECh. 16 - Prob. 21ECh. 16 - 22. A 100.0-mL buffer solution is 0.175 M in HClO...Ch. 16 - Prob. 23ECh. 16 - Prob. 24ECh. 16 - Prob. 25ECh. 16 - Prob. 26ECh. 16 - Prob. 27ECh. 16 - Prob. 28ECh. 16 - Prob. 29ECh. 16 - Prob. 30ECh. 16 - Prob. 31ECh. 16 - Which buffer system is the best choice to create a...Ch. 16 - Prob. 33ECh. 16 - Prob. 34ECh. 16 - Prob. 35ECh. 16 - Prob. 36ECh. 16 - Prob. 37ECh. 16 - Prob. 38ECh. 16 - Prob. 39ECh. 16 - Prob. 40ECh. 16 - Prob. 41ECh. 16 - A 20.0-mL sample of 0.125 M HNO3 titrated with...Ch. 16 - Prob. 43ECh. 16 - Prob. 44ECh. 16 - Prob. 45ECh. 16 - Prob. 46ECh. 16 - Prob. 47ECh. 16 - Prob. 48ECh. 16 - Prob. 49ECh. 16 - Prob. 50ECh. 16 - Prob. 51ECh. 16 - Prob. 52ECh. 16 - Prob. 53ECh. 16 - Prob. 54ECh. 16 - Prob. 55ECh. 16 - Prob. 56ECh. 16 - Prob. 57ECh. 16 - Prob. 58ECh. 16 - Prob. 59ECh. 16 - Prob. 60ECh. 16 - Prob. 61ECh. 16 - Prob. 62ECh. 16 - Prob. 63ECh. 16 - Prob. 64ECh. 16 - Use the Kspvalue from Table 16.2 to calculate the...Ch. 16 - Prob. 66ECh. 16 - Prob. 67ECh. 16 - Calculate the molar solubility of MX (Ksp= 1.27 ...Ch. 16 - Prob. 69ECh. 16 - Calculate the solubility (in grams per 1.00102mL...Ch. 16 - Prob. 71ECh. 16 - Determine if each compound is more soluble in...Ch. 16 - Prob. 73ECh. 16 - Prob. 74ECh. 16 - Prob. 75ECh. 16 - 76. Predict whether or not a precipitate forms...Ch. 16 - Prob. 77ECh. 16 - Prob. 78ECh. 16 - Prob. 79ECh. 16 - Prob. 80ECh. 16 - Prob. 81ECh. 16 - Prob. 82ECh. 16 - Prob. 83ECh. 16 - Prob. 84ECh. 16 - Prob. 85ECh. 16 - Prob. 86ECh. 16 - Prob. 87ECh. 16 - Prob. 88ECh. 16 - Prob. 89ECh. 16 - Prob. 90ECh. 16 - Prob. 91ECh. 16 - Prob. 92ECh. 16 - One of the main components of hard water is CaCO3....Ch. 16 - Prob. 94ECh. 16 - Prob. 95ECh. 16 - Calculate the solubility of silver chloride ii a...Ch. 16 - Prob. 97ECh. 16 - Prob. 98ECh. 16 - Prob. 99ECh. 16 - Prob. 100ECh. 16 - What relative masses of demethyl amine and...Ch. 16 - Prob. 102ECh. 16 - Prob. 103ECh. 16 - Prob. 104ECh. 16 - Since soap and detergent action is hindered by...Ch. 16 - Prob. 106ECh. 16 - Prob. 107ECh. 16 - Determine the solubility of Cul in 0.40 M HCN...Ch. 16 - Prob. 109ECh. 16 - Prob. 110ECh. 16 - Prob. 111ECh. 16 - Prob. 112ECh. 16 - Prob. 113ECh. 16 - Prob. 114ECh. 16 - Prob. 115ECh. 16 - Prob. 116E
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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
- 8-71 Explain why you do not need to know the chemical formula of a buffer compound to use it.arrow_forwardChoose a weak-acid/weak-base conjugate pair from which you could prepare a buffer solution with pH = 7.5. Explain how you chose the conjugate pair. Calculate the ratio [weak base]/[weak acid) required to give pH = 7.5.arrow_forwardUsing the diagrams shown in Problem 10-117, which of the solutions would have the greatest buffer capacity, that is, greatest protection against pH change, when the following occurs? a. A strong acid is added to the solution. b. A strong base is added to the solution.arrow_forward
- 8-55 We commonly refer to a buffer as consisting of approximately equal molar amounts of a weak acid and its conjugate base—for example, CH3COOH and CH3COO-. Is it also possible to have a buffer consisting of approximately equal molar amounts of a weak base and its conjugate acid? Explain.arrow_forwardThe pH of 0.10 M CH3NH2 (methylamine) is 11.8. When the chloride salt of methylamine, CH3NH3Cl, is added to this solution, does the pH increase or decrease? Explain, using Le Chteliers principle and the common-ion effect.arrow_forwardSketch a titration curve for the titration of potassium hydroxide with HCl, both 0.100 M. Identify three regions in which a particular chemical species or system dominates the acid-base equilibria.arrow_forward
- Ammonia gas is bubbled into 275 mL of water to make an aqueous solution of ammonia. To prepare a buffer with a pH of 9.56, 15.0 g of NH4Cl are added. How many liters of NH3; at 25C and 0.981 atm should be used to prepare the buffer? Assume no volume changes and ignore the vapor pressure of water.arrow_forwardIdentify each pair that could form a buffer. (a) NaOH and NaCl (b) NaOH and NH3 (c) Na3PO4 and Na2HPO4arrow_forwardExplain why barium fluoride dissolves in dilute hydrochloric acid but is insoluble in water.arrow_forward
- 8-93 Do a 1.0 M CH3COOH solution and a 1.0 M HCI solution require the same amount of 1.0 M NaOH to hit a titration end point? Explain.arrow_forwardCalculate the mass in grams of ammonium chloride, NH4C1, that would have to be added to 500. mL of 0.10-M NH3 solution to have a pH of 9.00.arrow_forwardBriefly describe how a buffer solution can control the pH of a solution when strong acid is added and when strong base is added. Use NH3/NH4Cl as an example of a buffer and HCl and NaOH as the strong acid and strong base.arrow_forward
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