Chemistry
4th Edition
ISBN: 9780078021527
Author: Julia Burdge
Publisher: McGraw-Hill Education
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Chapter 15.5, Problem 1PPA
Practice Problem
ATTEMPT
Write K? expressions for
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Using the law of mass action, write the equilibrium
expression for each of the following reactions.
(a) 8 H2(g) + Sg(s) 2 8 H,S(g)
(b) C(s) + H,O(€) + Cl2(g) = COCl,(g) + H,(g)
(c) CaCO3(s) 2 CaO(s) + CO2(g)
(d) 3 C,H2(g) = CH(t)
Acti
Write the equilibrium expressions for the following reactions:
Which of the following statements is (are) true? (Select all that apply.)
If equilibrium constants for the chemical reaction
N2(g) + O2(g) :
= 2 NO(g) are K, = 1.1 x 103 and 3.6 x 103 at 2,200 K and 2,500 K, respectively, then the
reaction is exothermic.
If Q < K then the reactant concentrations will be decrease as the reaction proceeds to equilibrium.
Concentration of the products equals the concentrations of the reactants.
If the reaction, C(s) + 2H2(g) = CH4(g) is at equilibrium, adding solid carbon will cause the reaction to shift
in the forward direction.
None of these statements are true.
O At equilibrium, the rate of the forward reaction is equal to the rate of the reverse reaction.
Chapter 15 Solutions
Chemistry
Ch. 15.1 - Practice Problem ATTEMPT
In an analysis of the...Ch. 15.1 - Prob. 1PPBCh. 15.1 - Practice Problem CONCEPTUALIZE
Consider the...Ch. 15.2 - Practice ProblemATTEMPT Write the reaction...Ch. 15.2 - Practice Problem BUILD
Write the equation for the...Ch. 15.2 - Practice ProblemCONCEPTUALIZE In principle, in the...Ch. 15.2 - Select the correct equilibrium expression for the...Ch. 15.2 - Prob. 2CPCh. 15.3 - Practice Problem ATTEMPT Write equilibrium...Ch. 15.3 - Practice Problem BUILD
Which of the following...
Ch. 15.3 - Prob. 1PPCCh. 15.3 - Prob. 1CPCh. 15.3 - Prob. 2CPCh. 15.3 - Given the following information: HF ( a q ) ⇄ H +...Ch. 15.3 - Prob. 4CPCh. 15.4 - Practice ProblemATTEMPT The following reactions...Ch. 15.4 - Practice Problem BUILD
The equation represents a...Ch. 15.4 - Practice ProblemCONCEPTUALIZE Consider a chemical...Ch. 15.4 - Use the following information to answer questions...Ch. 15.4 - Prob. 2CPCh. 15.4 - 15.4.3 If for the reaction at a certain...Ch. 15.4 - If K c = 3 for the reaction X + 2Y ⇄ Z at a...Ch. 15.5 - Practice ProblemATTEMPT Write K? expressions for (...Ch. 15.5 - Prob. 1PPBCh. 15.5 - Prob. 1PPCCh. 15.5 - Prob. 1CPCh. 15.5 - Prob. 2CPCh. 15.5 - Prob. 3CPCh. 15.5 - Prob. 4CPCh. 15.5 - Prob. 5CPCh. 15.5 - Prob. 6CPCh. 15.6 - Practice Problem ATTEMPT
For the reaction:
....Ch. 15.6 - Practice ProblemBUILD K p = 2.79 × 10 − 5 for the...Ch. 15.6 - Practice Problem CONCEPTUALIZE
Consider the...Ch. 15.7 - Prob. 1PPACh. 15.7 - Prob. 1PPBCh. 15.7 - Prob. 1PPCCh. 15.8 - Practice ProblemATTEMPT Calculate the equilibrium...Ch. 15.8 - Practice ProblemBUILD Determine the initial...Ch. 15.8 - Practice Problem CONCEPTUALIZE
Consider the...Ch. 15.9 - Prob. 1PPACh. 15.9 - Prob. 1PPBCh. 15.9 - Prob. 1PPCCh. 15.10 - Practice ProblemATTEMPT Aqueous hydrocyanic acid...Ch. 15.10 - Practice Problem BUILD Consider a weak acid, HA,...Ch. 15.10 - Practice ProblemCONCEPTUALIZE Each of the...Ch. 15.11 - Practice Problem ATTEMPT Determine the equilibrium...Ch. 15.11 - Prob. 1PPBCh. 15.11 - Prob. 1PPCCh. 15.12 - Practice ProblemATTEMPT For each change indicated,...Ch. 15.12 - Prob. 1PPBCh. 15.12 - Practice ProblemCONCEPTUALIZE Consider the...Ch. 15.13 - Practice Problem ATTEMPT
For each reaction,...Ch. 15.13 - Practice Problem BUILD
For the following...Ch. 15.13 - Practice Problem CONCEPTUALIZE
Consider the...Ch. 15.14 - Practice Problem ATTEMPT
The reaction of carbon...Ch. 15.14 - Practice Problem BUILD
Consider the hypothetical...Ch. 15.14 - Practice Problem CONCEPTUALIZE
The decomposition...Ch. 15 - The K a for hydrocyanic acid ( HCN ) is 4 .9 × 10...Ch. 15 - 15.2
Determine the concentrations of in a...Ch. 15 - 15.3
Determine the for a weak acid if a 0.10-M...Ch. 15 - Prob. 4KSPCh. 15 - Define equilibrium. Give two examples of a dynamic...Ch. 15 - 15.2 Which of the following statements is correct...Ch. 15 - 15.3 Consider the reversible reaction Explain how...Ch. 15 - What is the law of mass action?Ch. 15 - Briefly describe the importance of equilibrium in...Ch. 15 - Define reaction quotient. How does it differ from...Ch. 15 - Write reaction quotients for the following...Ch. 15 - Write the equation for the reaction that...Ch. 15 - Consider the reaction: 2NO ( g ) + 2H 2 ( g ) ⇄ N...Ch. 15 - The equilibrium constant for the reaction: 2SO 2 (...Ch. 15 - Consider the following equilibrium process at...Ch. 15 - The equilibrium constant for the reaction: 2 H 2 (...Ch. 15 - The first diagram represents a system at...Ch. 15 - These two diagrams represent systems at...Ch. 15 - Define homogeneous equilibrium and heterogeneous...Ch. 15 - What do the symbols K c and K p represent?Ch. 15 - Write the expressions for the equilibrium...Ch. 15 - Write equilibrium constant expressions for K c ,...Ch. 15 - Write the equilibrium constant expressions for K c...Ch. 15 - 15.20 Write the equation relating to , and define...Ch. 15 - 15.21 The equilibrium constant () for the...Ch. 15 - What is K p at 1273°C for the reaction 2CO ( g ) +...Ch. 15 - 15.23 The equilibrium constant for the...Ch. 15 - 15.24 Consider the reaction:
If the equilibrium...Ch. 15 - 15.25 A reaction vessel contains at equilibrium...Ch. 15 - 15.26 The equilibrium constant Kc for the...Ch. 15 - At equilibrium, the pressure of the reacting...Ch. 15 - The equilibrium constant K p for the reaction: PCl...Ch. 15 - Ammonium carbamate ( NH 4 CO 2 NH 2 ) decomposes...Ch. 15 - The following equilibrium constants were...Ch. 15 - 15.31 At a certain temperature, the following...Ch. 15 - 15.32 Pure phosgene gas , was placed in a 1.50-L...Ch. 15 - Consider the equilibrium: 2 NOBr( g ) ⇄ 2 NO( g...Ch. 15 - The following equilibrium constants have been...Ch. 15 - 15.35 The following equilibrium constants have...Ch. 15 - 15.36 The equilibrium constant for the reaction at...Ch. 15 - The following diagrams represent the equilibrium...Ch. 15 - 15.38 Outline the steps for calculating the...Ch. 15 - 15.39 The equilibrium constant K? for the...Ch. 15 - 15.40 For the synthesis of ammonia:
the...Ch. 15 - For the reaction: H 2 ( g ) + CO 2 ( g ) ⇄ H 2 O (...Ch. 15 - At 1000 K, a sample of pure NO, gas decomposes:...Ch. 15 - The equilibrium constant K c for the reaction H 2...Ch. 15 - The dissociation of molecular iodine into iodine...Ch. 15 - The equilibrium constant Kc for the decomposition...Ch. 15 - 15.46 Consider the following equilibrium process...Ch. 15 - 15.47 Consider the heterogeneous equilibrium...Ch. 15 - The equilibrium constant K c for the reaction: H 2...Ch. 15 - The aqueous reaction: L-glutamate + pyruvate ⇄...Ch. 15 - 15.50 Explain Le Châtelier’s principle. How does...Ch. 15 - Use Le Chatelier's principle to explain why the...Ch. 15 - 15.52 List four factors that can shift the...Ch. 15 - Does the addition of a catalyst have any effects...Ch. 15 - 15.54 Consider the following equilibrium system...Ch. 15 - 15.55 Heating solid sodium bicarbonate in a closed...Ch. 15 - 15.56 Consider the following equilibrium...Ch. 15 - 15.57 What effect does an increase in pressure...Ch. 15 - Prob. 58QPCh. 15 - Consider the following equilibrium process: PCl 5...Ch. 15 - Consider the reaction: 2SO 2 ( g ) ⇄ 2 SO 3 ( g )...Ch. 15 - In the uncatalyzed reaction: N 2 O 4 ( g ) ⇄ 2 NO...Ch. 15 - 15.62 Consider the gas-phase reaction:
Predict...Ch. 15 - Consider the following equilibrium reaction in a...Ch. 15 - 15.64 The following diagrams show the reaction at...Ch. 15 - 15.65 The following diagrams show an equilibrium...Ch. 15 - 15.66 Consider the reaction . The first diagram...Ch. 15 - Prob. 67APCh. 15 - Consider the equilibrium system 3A → B . Sketch...Ch. 15 - Baking soda (sodium bicarbonate) undergoes thermal...Ch. 15 - Consider the following reaction at equilibrium: A...Ch. 15 - Prob. 71APCh. 15 - 15.72 Consider the following reacting...Ch. 15 - 15.73 At a certain temperature and a total...Ch. 15 - The decomposition of ammonium hydrogen sulfide: N...Ch. 15 - 15.75 Consider the following reaction at a certain...Ch. 15 - When heated, ammonium carbamate decomposes as...Ch. 15 - A mixture of 0 .47 mole of H2 and 3 .59 moles of...Ch. 15 - When heated at high temperatures, iodine vapor...Ch. 15 - 15.79 One mole of and three moles of are placed...Ch. 15 - At 1130°C , the equilibrium constant ( K c ) for...Ch. 15 - For the purpose of determining K p using Equation...Ch. 15 - The following diagram represents a gas-phase...Ch. 15 - 15.83 Consider the following reaction at
When...Ch. 15 - 15.84 A quantity of 0.20 mole of carbon dioxide...Ch. 15 - 15.85 When dissolved in water, glucose (com sugar)...Ch. 15 - 15 86 At room temperature, solid iodine is in...Ch. 15 - 15.87 A student placed a few ice cubes in a...Ch. 15 - 15.88 A mixture containing 3.9 moles of and 0.88...Ch. 15 - 15.89 The equilibrium constant for the...Ch. 15 - When heated, a gaseous compound A dissociates as...Ch. 15 - 15.91 When a gas was heated under atmospheric...Ch. 15 - The first diagram represents a system at...Ch. 15 - A sealed glass bulb contains a mixture of NO 2 and...Ch. 15 - At 20°C , the vapor pressure of water is 0.0231...Ch. 15 - A 2.50-mol sample of NOCl was initially in a...Ch. 15 - 15.96 About 75 percent of hydrogen for industrial...Ch. 15 - Water is a very weak electrolyte that undergoes...Ch. 15 - 15.98 Consider the following reaction, which takes...Ch. 15 - The equilibrium constant Kc for the reaction: 2NH...Ch. 15 - At 25°C, a mixture of NO 2 and N 2 O 4 gases are...Ch. 15 - 15.101 Consider the reaction between and in a...Ch. 15 - In 1899 the German chemist Ludwig Mond developed a...Ch. 15 - For which of the following reactions is K c equal...Ch. 15 - The equilibrium constant K p for the following...Ch. 15 - At 1024°C, , the pressure of oxygen gas from the...Ch. 15 - 15.06 The equilibrium constant for the following...Ch. 15 - 15.107 Industrially, sodium metal is obtained by...Ch. 15 - Consider the equilibrium reaction described in...Ch. 15 - The K p for the reaction: SO 2 Cl 2 ( g ) ⇄ SO 2 (...Ch. 15 - The "boat" form and the “chair" form of...Ch. 15 - A quantity of 6.75 g of SO 2 Cl 2 was placed in a...Ch. 15 - 15.112 Industrial production of ammonia from...Ch. 15 - 15.113 The equilibrium constant for the formation...Ch. 15 - Consider the reaction: 2NO( g )+ O 2 ( g ) ⇄ 2N O...Ch. 15 - The formation of SO 3 from SO 2 and O 2 is an...Ch. 15 - At 25°C , the equilibrium partial pressures of N O...Ch. 15 - 15.117 The vapor pressure of mercury is 0.0020...Ch. 15 - 15.118 Both ' and are important biological ions....Ch. 15 - Photosynthesis can be represented by: 6C O 2 ( g...Ch. 15 - Consider the decomposition of ammonium chloride at...Ch. 15 - 15.121 Eggshells are composed mostly of calcium...Ch. 15 - In the gas phase, nitrogen dioxide is actually a...Ch. 15 - Consider the potential-energy diagrams for two...Ch. 15 - Iodine is sparingly soluble in water but much more...Ch. 15 - The dependence of the equilibrium constant of a...Ch. 15 - Lime ( CaO ) is used to prevent SO 2 from escaping...Ch. 15 - Lime is used to prevent from escaping from the...Ch. 15 - Lime ( CaO ) is used to prevent SO 2 from escaping...Ch. 15 - Lime ( CaO ) is used to prevent SO 2 from escaping...
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- Write the equilibrium constant expressions for the following. Fill the missing powers in the expressions. (a) 2NAHCO3(s) 2 Na2CO3(s) + CO2(g) + H2O(g) (Pco, ) (PH,0) i i Keq (b) 2N2(g) + 6H2O(1) 2 4NH3(g) + 302(g) (PNH, ) (Po.) (PNa ) i i i Keg (c) 2C2H4(g) + O2(g) 2 2CH3CHO(g) (PCH, CHO ) (Pc,H, ) i i (Ро.) i Keg (d) Ag2SO4(s) 2 2Ag*(aq) + SO4²-(aq) [Ag*] i [so? ] i Keg (e) NH4HS(s) 2 H2S(g) + NH3(g) (PH,s) (PNH, ) i i Kegarrow_forwardThe solubility product, Ksp, of AgCl is 1.8 x 10-¹0. Which of the following expressions is equal to the solubility of AgCl? (A) (1.8 x 10-¹0)² molar (B) 1.8 x 10 2 -10 molar (C) 1.8 x 10-10 molar -10 (D) √1.8 x 107 molararrow_forwardThe equilibrium constant (KC) is 10.0 x 10-10 at 800 K for the reaction. N2O3 (g) ⇄ NO2 (g) + NO (g) (2a)Write the equilibrium expression for this reaction. (2b) What is the value of KP at this temperature?(2c) What is the value of KC for the reverse reaction?arrow_forward
- 4 (a) Calculate the value of Kc for the reaction: PC15 ( PC13 ( + Cl2 (g) AH = Positive Given that when 8.4 mol of PC15 (g) is mixed with 1.8 mol of PC13 (g) and allowed to come to equilibrium in a 10 dm³ container the amount of PC15 (g) at equilibrium is 7.2 mol. Kc = (b) Explain the effect of the following changes below on the value of Kc: (i) Increasing temperature (ii) Lowering the concentration of chlorine (Cl₂) (iii) Addition of a catalystarrow_forwardWrite the equilibrium constant expression, K, for the following reaction taking place in dilute aqueous solution. (CH3),NH (aq) + H2O(1) (CH)2NH2* (аq)+ оH(аq) K =arrow_forward5.Write equilibrium expressions for each of the following reactions: (a) CaCO3(s) →*CaO(s) + CO,(g) (b) Hg() + Hg²+ (aq) → Hg2+ (aq) (c) 2Fe(s) + 3H₂O(1) (d) O₂(g) + 2H₂(g) ● ● ● Fe₂O3(s) + 2H₂(g) -2H₂O(1).arrow_forward
- C (s) + 2 Cl, (g)= CC1, (g) Answer and briefly explain: Which would cause the reaction to shift to the right: (a) ↑ V (b) + N2 (c) Į V?arrow_forwardWhich of the following does not represent a homogeneous equilibrium? [Select all that apply] Group of answer choices N2O4 (g) ⇄ 2 NO2 (g) N2 (g) + 3 H2 (g) ⇄ 2 NH3 (g) CaCO3 (s) ⇄ CaO (s) + CO2 (g) H2 (g) + I2 (g) ⇄ 2 HI (g) Co (s) + 2H+ (aq) ⇄ Co2+ (aq) + H2 (g)arrow_forwardWhat's the equilibrium expression for the following reaction:arrow_forward
- 1) Given the following reaction what is the expression for K? 2SO2 (g) + 02 (g) = 2S03 (g)arrow_forwardInterconvert K and K values. Calculate Ko for the following reactions at the indicated temperature. (a) 2 NOCI(g) 2 NO(g) + Cl₂(g) K = 2.69x10-³ at 560 K Kp = (b) NHAl(s)NH₂(g) + HI(g) Kc = 5.59×10-4 at 634 K Kp =arrow_forwardBenzoic acid (C,H,COOH) dissolves in water to the extent of 2.00 g L¯1 at 15°C and in diethyl ether to the extent of 6.6 × 10² g L¯1 at the same temperature. (a) Calculate the equilibrium constants at 15°C for the two reactions C,H;COOH(s) 2 C,H;COOH(aq)arrow_forward
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