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OWLv2 with Student Solutions Manual eBook for Ebbing/Gammon's General Chemistry, 11th Edition, [Instant Access], 4 terms (24 months)
11th Edition
ISBN: 9781305864900
Author: Darrell Ebbing; Steven D. Gammon
Publisher: Cengage Learning US
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Textbook Question
Chapter 16, Problem 16.117QP
A 0.288-g sample of an unknown monoprotic organic acid is dissolved in water and titrated with a 0.115 M sodium hydroxide solution. After the addition of 17.54 mL of base a pH of 4.92 is recorded. The equivalence point is reached when a total of 33.83 mL of NaOH is added.
- a What is the molar mass of the organic acid?
- b What is the Ka value for the acid? The Ka value could have been determined very easily if a pH measurement had been made after the addition of 16.92 mL of NaOH. Why?
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Chapter 16 Solutions
OWLv2 with Student Solutions Manual eBook for Ebbing/Gammon's General Chemistry, 11th Edition, [Instant Access], 4 terms (24 months)
Ch. 16.1 - Lactic acid, HC3H5O3, is found in sour milk, where...Ch. 16.1 - What are the concentrations of hydrogen ion and...Ch. 16.1 - What is the pH of an aqueous solution that is...Ch. 16.1 - You have prepared dilute solutions of equal molar...Ch. 16.2 - Sulfurous acid, H2SO3, is a diprotic acid with Ka1...Ch. 16.3 - Quinine is an alkaloid, or naturally occurring...Ch. 16.3 - What is the hydronium-ion concentration of a 0.20...Ch. 16.3 - Prob. 16.2CCCh. 16.4 - Consider solutions of the following salts: a....Ch. 16.4 - Calculate the following at 25C, using Tables 16.1...
Ch. 16.4 - Benzoic acid, HC7H5O2, and its salts are used as...Ch. 16.4 - Which of the following aqueous solutions has the...Ch. 16.5 - The chemical equation for the hydrolysis of...Ch. 16.5 - What is the concentration of formate ion, CHO2, in...Ch. 16.5 - One liter of solution was prepared by dissolving...Ch. 16.6 - What is the pH of a buffer prepared by adding 30.0...Ch. 16.6 - Suppose you add 50.0 mL of 0.10 M sodium hydroxide...Ch. 16.6 - Prob. 16.5CCCh. 16.6 - The beaker on the left below represents a buffer...Ch. 16.7 - What is the pH of a solution in which 15 mL of...Ch. 16.7 - What is the pH at the equivalence point when 25 mL...Ch. 16.7 - Prob. 16.16ECh. 16 - Write an equation for the ionization of hydrogen...Ch. 16 - Prob. 16.2QPCh. 16 - Briefly describe two methods for determining Ka...Ch. 16 - Describe how the degree of ionization of a weak...Ch. 16 - Prob. 16.5QPCh. 16 - Phosphorous acid, H2PHO3, is a diprotic acid....Ch. 16 - Prob. 16.7QPCh. 16 - Write the equation for the ionization of aniline,...Ch. 16 - Which of the following is the strongest base: NH3,...Ch. 16 - Do you expect a solution of anilinium chloride...Ch. 16 - Prob. 16.11QPCh. 16 - The pH of 0.10 M CH3NH2 (methylamine) is 11.8....Ch. 16 - Define the term buffer. Give an example.Ch. 16 - What is meant by the capacity of a buffer?...Ch. 16 - Prob. 16.15QPCh. 16 - If the pH is 8.0 at the equivalence point for the...Ch. 16 - Which of the following salts would produce the...Ch. 16 - If you mix 0.10 mol of NH3 and 0.10 mol of HCl in...Ch. 16 - Hydrogen sulfide, H2S, is a very weak diprotic...Ch. 16 - If 20.0 mL of a 0.10 M NaOH solution is added to a...Ch. 16 - Aqueous Solutions of Acids, Bases, and Salts a For...Ch. 16 - The pH of Mixtures of Acid, Base, and Salt...Ch. 16 - Which of the following beakers best represents a...Ch. 16 - You have 0.10-mol samples of three acids...Ch. 16 - Prob. 16.25QPCh. 16 - You have the following solutions, all of the same...Ch. 16 - Prob. 16.27QPCh. 16 - A chemist prepares dilute solutions of equal molar...Ch. 16 - Prob. 16.29QPCh. 16 - Prob. 16.30QPCh. 16 - You are given the following acidbase titration...Ch. 16 - The three flasks shown below depict the titration...Ch. 16 - Write chemical equations for the acid ionizations...Ch. 16 - Write chemical equations for the acid ionizations...Ch. 16 - Acrylic acid, whose formula is HC3H3O2 or...Ch. 16 - Heavy metal azides, which are salts of hydrazoic...Ch. 16 - Boric acid, B(OH)3, is used as a mild antiseptic....Ch. 16 - Formic acid, HCHO2, is used to make methyl formate...Ch. 16 - C6H4NH2COOH, para-aminobenzoic acid (PABA), is...Ch. 16 - Barbituric acid. HC4H3N2O3, is used to prepare...Ch. 16 - A solution of acetic acid, HC2H3O2, on a...Ch. 16 - A chemist wanted to determine the concentration of...Ch. 16 - Hydrofluoric acid, HF, unlike hydrochloric acid,...Ch. 16 - Chloroacetic acid, HC2H2ClO2, has a greater acid...Ch. 16 - What is the hydronium-ion concentration of a 2.00...Ch. 16 - What is the hydronium-ion concentration of a 3.00 ...Ch. 16 - Phthalic acid, H2C8H4O4, is a diprotic acid used...Ch. 16 - Carbonic acid, H2CO3, can be found in a wide...Ch. 16 - Write the chemical equation for the base...Ch. 16 - Write the chemical equation for the base...Ch. 16 - Butylamine, C4H3NH2 is a weak base. A 0.47 M...Ch. 16 - Trimethylamine, (CH3)3N, is a gas with a fishy,...Ch. 16 - What is the concentration of hydroxide ion in a...Ch. 16 - What is the concentration of hydroxide ion in a...Ch. 16 - Note whether hydrolysis occurs for each of the...Ch. 16 - Note whether hydrolysis occurs for each of the...Ch. 16 - Prob. 16.57QPCh. 16 - Prob. 16.58QPCh. 16 - For each of the following salts, indicate whether...Ch. 16 - Note whether the aqueous solution of each of the...Ch. 16 - Decide whether solutions of the following salts...Ch. 16 - Decide whether solutions of the following salts...Ch. 16 - Obtain a the Kb value for NO2; b the Ka value for...Ch. 16 - Prob. 16.64QPCh. 16 - What is the pH of a 0.025 M aqueous solution of...Ch. 16 - Calculate the OH concentration and pH of a 0.0025...Ch. 16 - Calculate the concentration of pyridine, C5H5N, in...Ch. 16 - What is the pH of a 0.30 M solution of...Ch. 16 - Calculate the degree of ionization of a 0.75 M HF...Ch. 16 - Calculate the degree of ionization of a 0.22 M...Ch. 16 - What is the pH of a solution that is 0.600 M HCHO2...Ch. 16 - What is the pH of a solution that is 0.20 M KOCN...Ch. 16 - What is the pH of a solution that is 0.10 M CH3NH2...Ch. 16 - What is the pH of a solution that is 0.15 M...Ch. 16 - A buffer is prepared by adding 39.8 mL of 0.75 M...Ch. 16 - A buffer is prepared by adding 115 mL of 0.30 M...Ch. 16 - What is the pH of a buffer solution that is 0.10 M...Ch. 16 - A buffer is prepared by mixing 525 mL of 0.50 M...Ch. 16 - What is the pH of a buffer solution that is 0.15 M...Ch. 16 - What is the pH of a buffer solution that is 0.10 M...Ch. 16 - What is the pH of a buffer solution that is 0.15 M...Ch. 16 - What is the pH of a buffer solution that is 0.15 M...Ch. 16 - How many moles of sodium acetate must be added to...Ch. 16 - How many moles of hydrofluoric acid, HF, must be...Ch. 16 - What is the pH of a solution in which 15 mL of...Ch. 16 - What is the pH of a solution in which 35 mL of...Ch. 16 - A 1.24-g sample of benzoic acid was dissolved in...Ch. 16 - A 0.400-g sample of propionic acid was dissolved...Ch. 16 - Find the pH of the solution obtained when 32 mL of...Ch. 16 - What is the pH at the equivalence point when 22 mL...Ch. 16 - A 50.0-mL sample of a 0.100 M solution of NaCN is...Ch. 16 - Sodium benzoate, NaC7H5O2, is used as a...Ch. 16 - Calculate the pH of a solution obtained by mixing...Ch. 16 - Calculate the pH of a solution obtained by mixing...Ch. 16 - Salicylic acid, C6H4OHCOOH, is used in the...Ch. 16 - Cyanoacetic acid, CH2CNCOOH, is used in the...Ch. 16 - A 0.050 M aqueous solution of sodium hydrogen...Ch. 16 - A 0.10 M aqueous solution of sodium dihydrogen...Ch. 16 - Prob. 16.99QPCh. 16 - Calculate the base-ionization constants for PO43...Ch. 16 - Calculate the pH of a 0.072 M aqueous solution of...Ch. 16 - Calculate the pH of a 0.10 M aqueous solution of...Ch. 16 - An artificial fruit beverage contains 11.0 g of...Ch. 16 - A buffer is made by dissolving 12.5 g of sodium...Ch. 16 - Blood contains several acid base systems that tend...Ch. 16 - Codeine, C23H21NO3, is an alkaloid (Kb = 6 2 109)...Ch. 16 - Calculate the pH of a solution obtained by mixing...Ch. 16 - Calculate the pH of a solution made up from 2.0 g...Ch. 16 - Find the pH of the solution obtained when 25 mL of...Ch. 16 - What is the pH of the solution obtained by...Ch. 16 - Ionization of the first proton from H2SO4 is...Ch. 16 - Ionization of the first proton from H2SeO4 is...Ch. 16 - Methylammonium chloride is a salt of methylamine,...Ch. 16 - Sodium benzoate is a salt of benzoic acid,...Ch. 16 - Each of the following statements concerns a 0.010...Ch. 16 - Each of the following statements concerns a 0.10 M...Ch. 16 - A 0.288-g sample of an unknown monoprotic organic...Ch. 16 - A 0.239-g sample of unknown organic base is...Ch. 16 - a Draw a pH titration curve that represents the...Ch. 16 - a Draw a pH titration curve that represents the...Ch. 16 - The equilibrium equations and Ka values for three...Ch. 16 - Prob. 16.122QPCh. 16 - A 25.0-mL sample of hydroxylamine is titrated to...Ch. 16 - A 25.00-mL sample contains 0.562 g of NaHCO3. This...Ch. 16 - A solution made up of 1.0 M NH3 and 0.50 M...Ch. 16 - A solution is prepared from 0.150 mol of formic...Ch. 16 - An important component of blood is the buffer...Ch. 16 - An important component of blood is the buffer...Ch. 16 - Tartaric acid is a weak diprotic fruit acid with...Ch. 16 - Malic acid is a weak diprotic organic acid with...Ch. 16 - A quantity of 0.25 M sodium hydroxide is added to...Ch. 16 - A quantity of 0.15 M hydrochloric acid is added to...Ch. 16 - Prob. 16.133QPCh. 16 - Prob. 16.134QPCh. 16 - A 30.0-mL sample of 0.05 M HClO is titrated by a...Ch. 16 - Prob. 16.136QPCh. 16 - Prob. 16.137QPCh. 16 - Calculate the pH of a solution made by mixing 0.62...Ch. 16 - Cyanic acid, HOCN, is a weak acid with a Ka value...Ch. 16 - The Kb for NH3 is 1.8 105 at 25C. Calculate the...Ch. 16 - Ka for formic acid is 1.7 104 at 25C. A buffer is...Ch. 16 - K4 for acetic acid is 1.7 105 at 25C. A buffer...Ch. 16 - Prob. 16.143QPCh. 16 - Prob. 16.144QPCh. 16 - Prob. 16.145QPCh. 16 - Two samples of 1.00 M HCl of equivalent volumes...Ch. 16 - Prob. 16.147QPCh. 16 - Prob. 16.148QPCh. 16 - A solution of weak base is titrated to the...Ch. 16 - A buffer solution is prepared by mixing equal...Ch. 16 - The pH of a white vinegar solution is 2.45. This...Ch. 16 - The pH of a household cleaning solution is 11.50....Ch. 16 - What is the freezing point of 0.92 M aqueous...Ch. 16 - Prob. 16.154QPCh. 16 - A chemist needs a buffer with pH 4.35. How many...Ch. 16 - A chemist needs a buffer with pH 3.50. How many...Ch. 16 - Weak base B has a pKb of 6.78 and weak acid HA has...
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