EBK INTRO.CHEMISTRY (NASTA EDITION)
9th Edition
ISBN: 9781337678032
Author: ZUMDAHL
Publisher: CENGAGE CO
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Chapter 17, Problem 4CR
How is the strength of an acid related to the position of its ionization equilibrium? Write the equations for the dissociation (ionization) of HCI, HNO3, and HClO4in water. Since all these acids are strong acids, what does this indicate about the basicity of the Cl-,
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The scale used for measuring the acidity or basicity of a solution is known as the pH scale. Typically you will see values ranging from 0 to 14, however it is possible to produce highly acidic solutions with a lower pH or a highly basic solution with a
higher pH. A neutral solution has an equivalent concentration of hydronium and hydroxide ions, which has a pH of 7 at 25 °C. A pH less than 7 indicates that a solution is an acid, and a pH greater than / Indicates that a solution is a base.
Click on the image below to explore this simulation, which demonstrates the pH scale. The pH of the solution is related to the H₂O¹ ion concentration by the equation
pH = -log H₂O¹]
When you click the simulation link, you may be asked whether to run, open, or save the file. Choose to run or open it
Part D
A
PHET=
In this simulation, allowing you to produce solutions at at 25°C, you should see three modes: Macro, Micro, and Custom. In Macro and Micro, you are provided with a calibrated beaker along…
Consider the following acidic equilibrium: H₂CO₃(aq) + H₂O(l) ⇌ HCO₃⁻(aq) + H₃O⁺(aq). If you add NaHCO₃ to this solution, which of the following will occur?
A) The reaction quotient will decrease.
B) The reaction will shift in the reverse direction.
C) The equilibrium constant will increase.
D) No changes to the equilibrium positions will take place.
Indicate how the concentration of each aqueous species in the chemical equation changes to reestablish equilibrium after
changing the concentration of a reactant or product. Also indicate how the pH changes. An up arrow indicates an increase in
concentration, a down arrow indicates a decrease in concentration, and leaving it blank means there is no change in
the concentration.
HC\(aq)+H,O()=CN (aq)+H,0*(aq)
pH
after the concentration of HCN is increased
after the concentration of CN is decreased
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Chapter 17 Solutions
EBK INTRO.CHEMISTRY (NASTA EDITION)
Ch. 17.2 - Most modern refrigerators have an internal...Ch. 17.2 - Many conditions need to be met to produce a...Ch. 17.5 - Prob. 17.1SCCh. 17.6 - Prob. 17.2SCCh. 17.7 - Prob. 17.3SCCh. 17.7 - Prob. 17.4SCCh. 17.7 - Exercise 17.5 For the exothermic reaction...Ch. 17.9 - Prob. 17.6SCCh. 17.9 - Prob. 17.7SCCh. 17.9 - The Kspvalue for lead chromate, PbCrO4, is...
Ch. 17 - Consider an equilibrium mixture of four chemicals...Ch. 17 - The boxes shown below represent a set of initial...Ch. 17 - For the reaction H2+I22HI, consider two...Ch. 17 - Given the reaction A+BC+D, consider the following...Ch. 17 - Consider the reaction A+BC+D. A friend asks the...Ch. 17 - Prob. 6ALQCh. 17 - The value of the equilibrium constant, K, is...Ch. 17 - You are browsing through the Handbook of...Ch. 17 - What do you suppose happens to the Ksp, value of a...Ch. 17 - . Consider an equilibrium mixture consisting of...Ch. 17 - . Equilibrium is microscopically dynamic but...Ch. 17 - In Section 17.3 of your text, it is mentioned that...Ch. 17 - Prob. 13ALQCh. 17 - . Consider the figure below in answering the...Ch. 17 - For a chemical reaction to take place, some or all...Ch. 17 - For the simple reaction 2H2(g)+O2(g)2H2O(l)list...Ch. 17 - How do chemists envision reactions taking place in...Ch. 17 - When molecules collide, a certain minimum energy...Ch. 17 - How does a catalyst work to speed up a chemical...Ch. 17 - Why are enzymes important? For example, what is...Ch. 17 - How does equilibrium represent the balancing of...Ch. 17 - Consider the equilibrium process depicted in Fig....Ch. 17 - When writing a chemical equation for a reaction...Ch. 17 - . How do chemists recognize a system that has...Ch. 17 - . What does it mean to say that a state of...Ch. 17 - . Consider an initial mixture of N2 and H2 gases...Ch. 17 - . In general terms. what does the equilibrium...Ch. 17 - . There is only one value of the equilibrium...Ch. 17 - . Write the equilibrium expression for each of the...Ch. 17 - . Write the equilibrium expression for each of the...Ch. 17 - . Write the equilibrium expression for each of the...Ch. 17 - . Write the equilibrium expression for each of the...Ch. 17 - . Suppose that for the reaction...Ch. 17 - . Ammonia. a very important industrial chemical....Ch. 17 - . At high temperatures, elemental nitrogen and...Ch. 17 - . Suppose that for the reaction...Ch. 17 - . What is a homogeneous equilibrium system? Give...Ch. 17 - . True or false? The position of a heterogeneous...Ch. 17 - . Write the equilibrium expression for each of the...Ch. 17 - . Write the equilibrium expression for each of the...Ch. 17 - . Write the equilibrium expression for each of the...Ch. 17 - . Indicate whether the stated equilibrium...Ch. 17 - . In your own words, describe what Le Châtelier’s...Ch. 17 - . Consider the reaction 2CO(g)+O2(g)2CO2(g)Suppose...Ch. 17 - . For an equilibrium involving gaseous substances,...Ch. 17 - . What is the effect on the equilibrium position...Ch. 17 - . For the reaction system...Ch. 17 - . For the reaction system P4(s)+6F2(g)4PF3(g)which...Ch. 17 - . Suppose the reaction system...Ch. 17 - . Consider the general reaction...Ch. 17 - . Hydrogen gas and chlorine gas in the presence of...Ch. 17 - . Hydrogen gas, oxygen gas, and water vapor are in...Ch. 17 - . The reaction C2H2(g)+2Br2(g)C2H2Br4(g)is...Ch. 17 - . Old fashioned “smelling salts” consist of...Ch. 17 - . Plants synthesize the sugar dextrose according...Ch. 17 - . Consider the exothermic reaction...Ch. 17 - . Suppose are action has the equilibrium constant...Ch. 17 - . Suppose a reaction has the equilibrium constant...Ch. 17 - . For the reaction Br2(g)+5F2(g)2BrF5(g)the system...Ch. 17 - . Consider the reaction...Ch. 17 - . For the reaction 2CO(g)+O2(g)2CO2(g)it is found...Ch. 17 - . For the reaction CO2(g)+H2(g)CO(g)+H2O(g)the...Ch. 17 - . The equilibrium constant for the reaction...Ch. 17 - . For the reaction 2H2O(g)2H2(g)+O2(g)K=2.4103at a...Ch. 17 - . For the reaction 3O2(g)2O3(g)The equilibrium...Ch. 17 - . For the reaction N2O4(g)2NO(g)the equilibrium...Ch. 17 - . Explain how the dissolving of an ionic solute in...Ch. 17 - . What is the special name given to the...Ch. 17 - . Why does the amount of excess solid solute...Ch. 17 - . Which of the following will affect the total...Ch. 17 - . Write the balanced chemical equation describing...Ch. 17 - . Write the balanced chemical equation describing...Ch. 17 - . K for copper(II)hydroxide, Cu(OH)2, has a value...Ch. 17 - Prob. 60QAPCh. 17 - . A saturated solution of nickel(II) sulfide...Ch. 17 - . Most hydroxides are not very soluble in water....Ch. 17 - . The solubility product constant, Ksp, for...Ch. 17 - . Calcium sulfate, CaSO4, is only soluble in water...Ch. 17 - . Approximately 1.5103of iron(II) hydroxide....Ch. 17 - . Chromiurn(III) hydroxide dissolves in water only...Ch. 17 - . Magnesium fluoride dissolves in water to the...Ch. 17 - . Lead(II) chloride, PbCl2(s), dissolves in water...Ch. 17 - . Mercury(I) chloride, Hg2Cl2, was formerly...Ch. 17 - . The solubility product of iron(III) hydroxide is...Ch. 17 - . Before two molecules can react, chemists...Ch. 17 - . Why does an increase in temperature favor an...Ch. 17 - . The minimum energy required for molecules to...Ch. 17 - . A(n) _______ speeds up a reaction without being...Ch. 17 - . Equilibrium may be defined as the ________ of...Ch. 17 - . When a chemical system has reached equilibrium,...Ch. 17 - . What does it mean to say that all chemical...Ch. 17 - . What does it mean to say that chemical...Ch. 17 - . At the point of chemical equilibrium, the rate...Ch. 17 - . Equilibria involving reactants or products in...Ch. 17 - . According to Le Châtelier’s principle, when a...Ch. 17 - . Addition of an inert substance (one that does...Ch. 17 - . When the volume of a vessel containing a gaseous...Ch. 17 - . Consider the following reaction at some...Ch. 17 - . What is meant by the solubility product for a...Ch. 17 - . For a given reaction at a given temperature, the...Ch. 17 - . Many sugars undergo a process called...Ch. 17 - . Suppose K=4.5103at a certain temperature for the...Ch. 17 - . For the reaction CaCO3(s)CaO(s)+CO2(g)the...Ch. 17 - Prob. 90APCh. 17 - . Teeth and bones are composed, to a first...Ch. 17 - . Under what circumstances can we compare the...Ch. 17 - . How does the collision model account for the...Ch. 17 - Prob. 94APCh. 17 - . Explain why the development of a vapor pressure...Ch. 17 - Prob. 96APCh. 17 - Prob. 97APCh. 17 - . For the reaction N2(g)+3Cl2(g)2NCl3(g)an...Ch. 17 - . Gaseous phosphorus pentachloride decomposes...Ch. 17 - . Write the equilibrium expression for each of the...Ch. 17 - . Write the equilibrium expression for each of the...Ch. 17 - . Consider the following generic reaction:...Ch. 17 - Prob. 103APCh. 17 - . The reaction PCl3(l)+Cl2(g)PCl5(s)liberates 124...Ch. 17 - Prob. 105APCh. 17 - . For the reaction N2(g)+3H2(g)2NH3(g)K=1.3102at a...Ch. 17 - . The equilibrium constant for the reaction...Ch. 17 - Prob. 108APCh. 17 - Prob. 109APCh. 17 - Prob. 110APCh. 17 - . Mercuric sulphide, HgS, is one of the least...Ch. 17 - Prob. 112APCh. 17 - . For the reaction N2(g)+3H2(g)2NH3(g), list the...Ch. 17 - . What does the activation energy for a reaction...Ch. 17 - Prob. 115APCh. 17 - Prob. 116APCh. 17 - Prob. 117APCh. 17 - Prob. 118APCh. 17 - Prob. 119APCh. 17 - Prob. 120CPCh. 17 - . Suppose that for a hypothetical reaction:...Ch. 17 - Prob. 122CPCh. 17 - . The reaction H2(g)+I2(g)2HI(g)has Kp=45.9at 763...Ch. 17 - Prob. 124CPCh. 17 - Prob. 125CPCh. 17 - . Consider the following exothermic reaction at...Ch. 17 - Prob. 1CRCh. 17 - Prob. 2CRCh. 17 - Prob. 3CRCh. 17 - How is the strength of an acid related to the...Ch. 17 - Prob. 5CRCh. 17 - How is the pH scale defined? What range of pH...Ch. 17 - 7. Describe a buffered solution. Give three...Ch. 17 - Prob. 8CRCh. 17 - Prob. 9CRCh. 17 - . Explain what it means that a reaction has...Ch. 17 - . Describe how we write the equilibrium expression...Ch. 17 - Prob. 12CRCh. 17 - Prob. 13CRCh. 17 - . In your own words, paraphrase Le Châtelier’s...Ch. 17 - Prob. 15CRCh. 17 - Prob. 16CRCh. 17 - . a. Write the conjugate acid for each of the...Ch. 17 - . Identify the Brønsted-Lowry conjugate acid-base...Ch. 17 - Prob. 19CRCh. 17 - Prob. 20CRCh. 17 - Prob. 21CRCh. 17 - Prob. 22CRCh. 17 - Prob. 23CRCh. 17 - . The solubility product of magnesium carbonate,...
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- Most naturally occurring acids are weak acids. Lactic acid is one example. CH3CH(OH)CO2H(s)+H2O(l)H3O+(aq)+CH3CH(OH)CO2(aq) If you place some lactic acid in water, it will ionize to a small extent, and an equilibrium will be established. Suggest some experiments to prow that this is a weak acid and that the establishment of equilibrium is a reversible process.arrow_forwardConsider the following ions: NH4+, CO32, Br, S2, and ClO4. (a) Which of these ions in water gives an acidic solution and which gives a basic solution? (b) Which of these anions will have no effect on the pH of an aqueous solution? (c) Which ion is the strong base? (d) Write a chemical equation for the reaction of each basic anion with water.arrow_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_forward
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