Laboratory Experiments for Chemistry: The Central Science (13th Edition)

13th Edition

ISBN: 9780321949912

Author: Theodore E. Brown, John H. Nelson, Kenneth C. Kemp

Publisher: PEARSON

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Textbook Question

Chapter 3.4, Problem 3.12.1PE

Practice Exercise 1

If the pH of a buffer solution is equal to the pK_aof the acid in the buffer, what does this tell you about the relative concentrations of the acid and conjugate base forms of the buffer components?

The acid concentration must be zero.
The base concentration must be zero.
The acid and base concentrations must be equal.
The acid and base concentrations must be equal to the K_a.
The base concentration must be 2.3 times as large as the acid concentration.

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Chapter 3.4, Problem 3.11.2PE

Chapter 3.4, Problem 3.12.2PE

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Chapter 3 Solutions

Laboratory Experiments for Chemistry: The Central Science (13th Edition)

Ch. 3.1 - You add 10.0 grams of solid copper(II) phosphate,...Ch. 3.1 - Prob. 3.1.2PE Ch. 3.1 - Consider a saturated solution of the salt MA3, in...Ch. 3.1 - Prob. 3.2.2PE Ch. 3.2 - Prob. 3.3.1PE Ch. 3.2 - Prob. 3.3.2PE Ch. 3.2 - Prob. 3.4.1PE Ch. 3.2 - Prob. 3.4.2PE Ch. 3.3 - An insoluble salt MA has a Kap of 1.0 × 10-10. Two...Ch. 3.3 - Does a precipitate form when 0.050 L of 2.0 × 10-2...

Ch. 3.3 - Under what conditions does an ionic compound...Ch. 3.3 - Prob. 3.6.2PE Ch. 3.4 - Prob. 3.7.1PE Ch. 3.4 - The following boxes represent aqueos solutions...Ch. 3.4 - Prob. 3.8.1PE Ch. 3.4 - Prob. 3.8.2PE Ch. 3.4 - Prob. 3.9.1PE Ch. 3.4 - Prob. 3.9.2PE Ch. 3.4 - For the generic equilibrium HA(aq)H+(aq)+A(aq) ,...Ch. 3.4 - Practice Exercise 2 Calculate the pH of a solution...Ch. 3.4 - Calculate the concentration of the lactate ion in...Ch. 3.4 - Practice Exercise 2 Calculate the format ion...Ch. 3.4 - Practice Exercise 1 If the pH of a buffer solution...Ch. 3.4 - Prob. 3.12.2PE Ch. 3.5 - Prob. 3.13.1PE Ch. 3.5 - Prob. 3.13.2PE Ch. 3.5 - Calculate the number of grams of ammonium chloride...Ch. 3.5 - Prob. 3.14.2PE Ch. 3.5 - Prob. 3.15.1PE Ch. 3.5 - Determine The pH of the original buffer described...Ch. 3.6 - An acid-base titration is performed: 250.0 mL of...Ch. 3.6 - Prob. 3.16.2PE Ch. 3.6 - Prob. 3.17.1PE Ch. 3.6 - Calculate the pH in the solution formed by adding...Ch. 3.7 - Prob. 3.18.1PE Ch. 3.7 - Prob. 3.18.2PE Ch. 3.7 - Prob. 3.19.1PE Ch. 3.7 - Prob. 3.19.2PE Ch. 3.7 - Prob. 3.20.1PE Ch. 3.7 - Prob. 3.20.2PE Ch. 3 - The accompanying graph shows the titration curves...Ch. 3 - Prob. 2E Ch. 3 - Prob. 3E Ch. 3 - Prob. 4E Ch. 3 - Prob. 5E Ch. 3 - Prob. 6E Ch. 3 - Prob. 7E Ch. 3 - Prob. 8E Ch. 3 - Prob. 9E Ch. 3 - Use information from Appendix D to calculate the...Ch. 3 - A buffer is prepared by adding 10.0 g of ammonium...Ch. 3 - You are asked to prepare a pH = 3.00 buffer...Ch. 3 - You are asked to prepare an pH = 4.00 buffer...Ch. 3 - Prob. 14E Ch. 3 - Prob. 15E Ch. 3 - Prob. 16E Ch. 3 - Prob. 17E Ch. 3 - Prob. 18E Ch. 3 - Prob. 19E Ch. 3 - Prob. 20E Ch. 3 - 17.35 The samples of nitric and acetic acids shows...Ch. 3 - 17.36 Determine whether each of the following...Ch. 3 - Prob. 23E Ch. 3 - Prob. 24E Ch. 3 - Prob. 25E Ch. 3 - Assume that 30.0 mL of a M solution of a week base...Ch. 3 - Prob. 27E Ch. 3 - Prob. 28E Ch. 3 - Prob. 29E Ch. 3 - Prob. 30E Ch. 3 - Consider the titration of 30.0 mL of 0.050 M NH3...Ch. 3 - Prob. 32E Ch. 3 - Prob. 33E Ch. 3 - Prob. 34E Ch. 3 - The solubility of two slighty soluble salts of...Ch. 3 - Prob. 36E Ch. 3 - 17.52 a. true or false: solubility and...Ch. 3 - If the molar solubility CaF2 at 35 C is 1.24 *10-3...Ch. 3 - Prob. 39E Ch. 3 - Prob. 40E Ch. 3 - using calculate the molar solubility of AgBr in a....Ch. 3 - calculate the solubility of LaF3 in grams per...Ch. 3 - Prob. 43E Ch. 3 - Consider a beaker containing a saturated solution...Ch. 3 - Calculate the solubility of Mn (OH) 2 in grams per...Ch. 3 - Calculate the molar solubility of Ni (OH) 2 when...Ch. 3 - 17.63 Which of the following salts will be...Ch. 3 - For each of the following slightly soluble salts,...Ch. 3 - Prob. 49E Ch. 3 - Use values of Kap for Agl and Kf for Ag (CN) 2- to...Ch. 3 - Prob. 51E Ch. 3 - Prob. 52E Ch. 3 - Prob. 53E Ch. 3 - Calculate the minimum pH needed to precipitate Mn...Ch. 3 - Prob. 55E Ch. 3 - Prob. 56E Ch. 3 - Prob. 57E Ch. 3 - Prob. 58E Ch. 3 - Prob. 59E Ch. 3 - An unknown solid is entirely soluble in water. On...Ch. 3 - Prob. 61E Ch. 3 - Prob. 62E Ch. 3 - 17.81 Precipitation of the group 4 cautions of...Ch. 3 - Prob. 64E Ch. 3 - Prob. 65E Ch. 3 - Prob. 66E Ch. 3 - Furoic acid (HC5H3O3) has a K value of 6.76 x 10-4...Ch. 3 - Prob. 68E Ch. 3 - Equal quantities of 0.010 M solution of an acid HA...Ch. 3 - 17.89 A biochemist needs 750 ml of an acetic...Ch. 3 - (a) Define the terms limiting reactant and excess...Ch. 3 - Prob. 72E Ch. 3 - Prob. 73E Ch. 3 - Prob. 74E Ch. 3 - What is the pH of a solution made by mixing 0.30...Ch. 3 - Suppose you want to do a physiological experiment...Ch. 3 - Prob. 77E Ch. 3 - Prob. 78E Ch. 3 - For each pair of compounds, use Kap values to...Ch. 3 - Tooth enamel is composed of hydroxyapatite, whose...Ch. 3 - Salts containing the phosphate ion are added to...Ch. 3 - Prob. 82E Ch. 3 - 17.103 The solubility –product constant for barium...Ch. 3 - Prob. 84E Ch. 3 - Prob. 85E Ch. 3 - A buffer of what pH is needed to give a Mg2+...Ch. 3 - The value of Kap for Mg3(AsO4)2 is 2.1 10-20 ....Ch. 3 - Prob. 88AE Ch. 3 - Prob. 89AE Ch. 3 - Prob. 90AE Ch. 3 - Prob. 91AE Ch. 3 - Prob. 92AE Ch. 3 - Prob. 93AE Ch. 3 - Prob. 94AE Ch. 3 - Prob. 95AE Ch. 3 - A concentration of 10-100 parts per billion (by...Ch. 3 - Prob. 97AE Ch. 3 - Prob. 98AE Ch. 3 - In nonaqueous solvents, it is possible to react HF...Ch. 3 - Prob. 100AE Ch. 3 - Prob. 101AE Ch. 3 - Prob. 102AE Ch. 3 - 17.9 The following graphs represent the behavior...Ch. 3 - Prob. 104AE Ch. 3 - 17.11 The graph below shows the solubility of a...Ch. 3 - Prob. 106IE Ch. 3 - Prob. 107IE Ch. 3 - (a) If an automobile travels 225 mi with a gas...Ch. 3 - Prob. 109IE Ch. 3 - Prob. 110IE Ch. 3 - Hydrogen cyanide, HCN, is a poisonous gas. The...Ch. 3 - Prob. 112IE

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