EBK CHEMISTRY: AN ATOMS FIRST APPROACH
2nd Edition
ISBN: 8220100552236
Author: ZUMDAHL
Publisher: CENGAGE L
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Chapter 12, Problem 47E
Interpretation Introduction
Interpretation: A
Concept introduction: The state when the reactants involved in a
To determine: The equilibrium constant
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Please help me with # 4 and 5. Thanks in advance!
A small artisanal cheesemaker is testing the acidity of their milk
before it coagulates. During fermentation, bacteria produce lactic
acid (K₁ = 1.4 x 104), a weak acid that helps to curdle the milk and
develop flavor. The cheesemaker has measured that the developing
mixture contains lactic acid at an initial concentration of 0.025 M.
Your task is to calculate the pH of this mixture and determine whether
it meets the required acidity for proper cheese development. To
achieve the best flavor, texture and reduce/control microbial growth,
the pH range needs to be between pH 4.6 and 5.0.
Assumptions:
Lactic acid is a monoprotic acid
H
H
:0:0:
H-C-C
H
:0:
O-H
Figure 1: Lewis Structure for Lactic Acid
For simplicity, you can use the generic formula HA to represent the acid
You can assume lactic acid dissociation is in water as milk is mostly water.
Temperature is 25°C
1. Write the K, expression for the dissociation of lactic acid in the space provided. Do not forget to
include state symbols.…
Curved arrows are used to illustrate the flow of electrons. Using the provided starting and product
structures, draw the curved electron-pushing arrows for the following reaction or mechanistic step(s).
Be sure to account for all bond-breaking and bond-making steps.
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Chapter 12 Solutions
EBK CHEMISTRY: AN ATOMS FIRST APPROACH
Ch. 12 - Characterize a system at chemical equilibrium with...Ch. 12 - What is the law of mass action? Is it true that...Ch. 12 - Prob. 3RQCh. 12 - Prob. 4RQCh. 12 - Prob. 5RQCh. 12 - Distinguish between the terms equilibrium constant...Ch. 12 - Summarize the steps for solving equilibrium...Ch. 12 - Prob. 8RQCh. 12 - What is Le Chteliers principle? Consider the...Ch. 12 - Prob. 10RQ
Ch. 12 - Consider an equilibrium mixture of four chemicals...Ch. 12 - The boxes shown below represent a set of initial...Ch. 12 - For the reactionH2(g)+I2(g)2HI(g), consider two...Ch. 12 - Prob. 4ALQCh. 12 - Consider the reaction A(g)+2B(g)C(g)+D(g) in a...Ch. 12 - Consider the reactionA(g)+B(g)C(g)+D(g). A friend...Ch. 12 - Prob. 7ALQCh. 12 - Prob. 8ALQCh. 12 - Prob. 9ALQCh. 12 - Prob. 10QCh. 12 - Consider the following reaction:...Ch. 12 - Prob. 12QCh. 12 - Suppose a reaction has the equilibrium constant K...Ch. 12 - Prob. 14QCh. 12 - Consider the following reaction at some...Ch. 12 - Prob. 16QCh. 12 - Prob. 17QCh. 12 - Prob. 18QCh. 12 - For a typical equilibrium problem, the value of K...Ch. 12 - Prob. 20QCh. 12 - Write the equilibrium expression (K) for each of...Ch. 12 - Write the equilibrium expression (Kp) for each...Ch. 12 - Prob. 23ECh. 12 - For the reaction H2(g)+Br2(g)2HBr(g) Kp = 3.5 104...Ch. 12 - Prob. 25ECh. 12 - At high temperatures, elemental nitrogen and...Ch. 12 - At a particular temperature, a 3.0-L flask...Ch. 12 - At a particular temperature a 2.00-L flask at...Ch. 12 - Prob. 29ECh. 12 - Prob. 30ECh. 12 - Prob. 31ECh. 12 - Prob. 32ECh. 12 - Prob. 33ECh. 12 - Write expressions for Kp for the following...Ch. 12 - Prob. 35ECh. 12 - Prob. 36ECh. 12 - Prob. 37ECh. 12 - In a study of the reaction...Ch. 12 - The equilibrium constant is 0.0900 at 25C for the...Ch. 12 - The equilibrium constant is 0.0900 at 25C for the...Ch. 12 - At 900c, Kp = 1.04 for the reaction...Ch. 12 - Ethyl acetate is synthesized in a nonreacting...Ch. 12 - For the reaction 2H2O(g)2H2(g)+O2(g) K = 2.4 103...Ch. 12 - The reaction 2NO(g)+Br2(g)2NOBr(g) has Kp = 109 at...Ch. 12 - A 1.00-L flask was filled with 2.00 moles of...Ch. 12 - Prob. 46ECh. 12 - Prob. 47ECh. 12 - Prob. 48ECh. 12 - Prob. 49ECh. 12 - Nitrogen gas (N2) reacts with hydrogen gas (H2) to...Ch. 12 - Prob. 51ECh. 12 - Prob. 52ECh. 12 - Prob. 53ECh. 12 - At 25c, K = 0.090 for the reaction...Ch. 12 - Prob. 55ECh. 12 - Prob. 56ECh. 12 - Prob. 57ECh. 12 - At o particular temperature, K = 4 .0 107 for the...Ch. 12 - Prob. 59ECh. 12 - Lexan is a plastic used to make compact discs,...Ch. 12 - At 25C, Kp. = 2.9 103 for the reaction...Ch. 12 - A sample of solid ammonium chloride was placed in...Ch. 12 - Prob. 63ECh. 12 - Predict the shift in the equilibrium position that...Ch. 12 - An important reaction in the commercial production...Ch. 12 - What will happen to the number of moles of SO3 in...Ch. 12 - Prob. 67ECh. 12 - Hydrogen for use in ammonia production is produced...Ch. 12 - Old-fashioned smelling salts consist of ammonium...Ch. 12 - Ammonia is produced by the Haber process, in which...Ch. 12 - Prob. 71AECh. 12 - Given the following equilibrium constants at...Ch. 12 - Consider the decomposition of the compound C5H6O3...Ch. 12 - Prob. 74AECh. 12 - The gas arsine, AsH3, decomposes as follows:...Ch. 12 - At a certain temperature, K = 9.1 10-4 for the...Ch. 12 - At a certain temperature, K = 1.1 l03 for the...Ch. 12 - Prob. 78AECh. 12 - At 25C, gaseous SO2Cl2 decomposes to SO2(g) and...Ch. 12 - For the following reaction at a certain...Ch. 12 - Prob. 81AECh. 12 - Consider the reaction Fe3+(aq)+SCN(aq)FeSCN2+(aq)...Ch. 12 - Chromium(VI) forms two different oxyanions, the...Ch. 12 - Prob. 84AECh. 12 - Prob. 85AECh. 12 - For the reaction below, Kp = 1.16 at 800C....Ch. 12 - Many sugars undergo a process called mutarotation,...Ch. 12 - Peptide decomposition is one of the key processes...Ch. 12 - The creation of shells by mollusk species is a...Ch. 12 - Methanol, a common laboratory solvent, poses a...Ch. 12 - Prob. 91CWPCh. 12 - Prob. 92CWPCh. 12 - Prob. 93CWPCh. 12 - Prob. 94CWPCh. 12 - Prob. 95CWPCh. 12 - Prob. 96CWPCh. 12 - Consider the following exothermic reaction at...Ch. 12 - For the following endothermic reaction at...Ch. 12 - Prob. 99CPCh. 12 - A 4.72-g sample of methanol (CH3OH) was placed in...Ch. 12 - At 35C, K = 1.6 105 for the reaction...Ch. 12 - Nitric oxide and bromine at initial partial...Ch. 12 - At 25C. Kp = 5.3 105 for the reaction...Ch. 12 - Prob. 104CPCh. 12 - The partial pressures of an equilibrium mixture of...Ch. 12 - At 125C, KP = 0.25 for the reaction...Ch. 12 - A mixture of N2, H2, and NH3 is at equilibrium...Ch. 12 - Prob. 108CPCh. 12 - Prob. 109CPCh. 12 - Prob. 110CPCh. 12 - Prob. 111CPCh. 12 - A sample of N2O4(g) is placed in an empty cylinder...Ch. 12 - A sample of gaseous nitrosyl bromide (NOBr) was...Ch. 12 - Prob. 114CPCh. 12 - For the reaction NH3(g)+H2S(g)NH4HS(s) K = 400. at...Ch. 12 - Prob. 116IPCh. 12 - In a solution with carbon tetrachloride as the...Ch. 12 - Prob. 118IPCh. 12 - A gaseous material XY(g) dissociates to some...
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