Chemistry: Structure and Properties (2nd Edition)
2nd Edition
ISBN: 9780134293936
Author: Nivaldo J. Tro
Publisher: PEARSON
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Textbook Question
Chapter 15, Problem 4E
What is the significance of the equilibrium constant? What does a large equilibrium constant tell us about a reaction? A small one?
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Chapter 15 Solutions
Chemistry: Structure and Properties (2nd Edition)
Ch. 15 - How does a developing fetus get oxygen in the...Ch. 15 - What is dynamic equilibrium? Why is it called...Ch. 15 - Give the general expression for the equilibrium...Ch. 15 - What is the significance of the equilibrium...Ch. 15 - What happens to the value of the equilibrium...Ch. 15 - If two reactions sum to an overall reaction, and...Ch. 15 - Explain the difference between Kcand Kp. For a...Ch. 15 - What units should you use when expressing...Ch. 15 - Why do we omit the concentrations of solids and...Ch. 15 - Does the value of the equilibrium constant depend...
Ch. 15 - Explain how you might deduce the equilibrium...Ch. 15 - What is the definition of the reaction quotient ()...Ch. 15 - What is the value of when each reactant and...Ch. 15 - Prob. 14ECh. 15 - Many equilibrium calculations involve finding the...Ch. 15 - In equilibrium problems involving equilibrium...Ch. 15 - What happens to a chemical system at equilibrium...Ch. 15 - What is the effect of a change in concentration of...Ch. 15 - What is the effect of a change in volume on a...Ch. 15 - What is the effect of temperature change on a...Ch. 15 - Write an expression for the equilibrium constant...Ch. 15 - Find and fix each mistake in the equilibrium...Ch. 15 - When the reaction comes to equilibrium, will the...Ch. 15 - Ethene (C2H4) can be halogenated by this reaction:...Ch. 15 - H2 and I2 are combined in a flask and allowed to...Ch. 15 - A chemist trying to synthesize a particular...Ch. 15 - This reaction has an equilibrium constant of...Ch. 15 - This reaction has an equilibrium constant of...Ch. 15 - Prob. 29ECh. 15 - Use the following reactions and their equilibrium...Ch. 15 - Calculate Kc for reaction a. I2(g)2I(g)Kp=6.261022...Ch. 15 - Calculate Kpfor each reaction. a. N2O4(g)2NO2(g)...Ch. 15 - Write an equilibrium expression for each chemical...Ch. 15 - Find and fix the mistake in the equilibrium...Ch. 15 - Consider the reaction: CO(g)+2H2(g)CH3OH(g) An...Ch. 15 - Consider the reaction: NH4HS(s)NH3(g)+H2S(g) An...Ch. 15 - Consider the reaction: N2(g)+3H2(g)2NH3(g)...Ch. 15 - Consider the reaction: H2(g)+I2(g)2HI(g) Complete...Ch. 15 - Consider the reaction: 2NO(g)+Br2(g)2NOBr(g)Kp=...Ch. 15 - Consider the reaction:...Ch. 15 - For the reaction A(g)2B(g) , a reaction vessel...Ch. 15 - For the reaction 2A(g)B(g)+2C(g) , a reaction...Ch. 15 - Consider the reaction:...Ch. 15 - Consider the reaction: SO2Cl2(g)SO2+Cl2(g) A...Ch. 15 - Consider the reaction: H2(g)+I2(g)2HI(g) A...Ch. 15 - Consider the reaction. CO(g)+2H2(g)CH3OH(g) A...Ch. 15 - Consider the reaction: NH4HS(s)NH3(g)+H2S(g) At a...Ch. 15 - Consider the reaction:...Ch. 15 - Silver sulfate dissolves in water according to the...Ch. 15 - Nitrogen dioxide reacts with itself according to...Ch. 15 - Consider the reaction and the associated...Ch. 15 - Consider the reaction and the associated...Ch. 15 - For the reaction Kc= 0.513 at 500K. N2O4(g)2NO2(g)...Ch. 15 - For the reaction, Kc= 255 at 1000 K...Ch. 15 - Consider the reaction: NiO(s)+CO(g)Ni(s)+CO2(g)...Ch. 15 - Consider the reaction: CO(g)+H2O(g)CO2(g)+H2(g)Kc=...Ch. 15 - Consider the reaction: HC 2 H 3 O 2 (aq)+ H 2 O(l)...Ch. 15 - Prob. 58ECh. 15 - Consider the reaction:...Ch. 15 - Consider the reaction:...Ch. 15 - Consider the reaction: A(g)B(g)+C(g) Find the...Ch. 15 - Consider the reaction: A(g)2B(g) Find the...Ch. 15 - Consider this reaction at equilibrium:...Ch. 15 - Consider this reaction at equilibrium:...Ch. 15 - Consider this reaction at equilibrium:...Ch. 15 - Prob. 66ECh. 15 - Each reaction is allowed to come to equilibrium,...Ch. 15 - Prob. 68ECh. 15 - This reaction is endothermic: C(s)+CO2(g)2CO(g)...Ch. 15 - This reaction is exothermic:...Ch. 15 - Coal, which is primarily carbon, can be converted...Ch. 15 - Coal can be used to generate hydrogen gas (a...Ch. 15 - Carbon monoxide replaces oxygen in oxygenated...Ch. 15 - Nitrogen monoxide is a pollutant in the lower...Ch. 15 - The reaction CO2(g)+C(s)2CO(g) has Kp= 5.78 at...Ch. 15 - A mixture of water and graphite is heated to 600...Ch. 15 - At 650 K, the reaction MgCO3(s)MgO(s)+CO2(g) has...Ch. 15 - A system at equilibrium contains I2(g) at a...Ch. 15 - Consider the exothermic reaction:...Ch. 15 - Consider the endothermic reaction:...Ch. 15 - Consider the reaction: H2(g)+I2(g)2HI(g) A...Ch. 15 - Prob. 82ECh. 15 - Prob. 83ECh. 15 - Prob. 84ECh. 15 - The system described by the reaction:...Ch. 15 - A reaction vessel at 27017°C contains a mixture of...Ch. 15 - At 70 K, CCl4 decomposes to carbon and chlorine....Ch. 15 - The equilibrium constant for the reaction...Ch. 15 - A sample of CaCO3(s) is introduced into a sealed...Ch. 15 - An equilibrium mixture contains N2O4, (P = O.28)...Ch. 15 - Carbon monoxide and chlorine gas react to form...Ch. 15 - Prob. 92ECh. 15 - Prob. 93ECh. 15 - Prob. 94ECh. 15 - Nitrogen monoxide reacts with chlorine gas...Ch. 15 - At a given temperature, a system containing O2(g)...Ch. 15 - A sample of pure NO2 is heated to 337 °C, at which...Ch. 15 - When N2O5(g) is heated, it dissociates into...Ch. 15 - A sample of SO3 is introduced into an evacuated...Ch. 15 - A reaction A(g)B(g) has an equilibrium constant of...Ch. 15 - The reaction A(g)2B(g) has an equilibrium constant...Ch. 15 - A particular reaction has an equilibrium constant...Ch. 15 - Consider the reaction: aA(g)bB(g) Each of the...Ch. 15 - Consider the simple one-step reaction: A(g)B(g)...Ch. 15 - Prob. 105ECh. 15 - Consider the reaction: N2(g)+3H2(g)2NH3(g). a....Ch. 15 - For the reaction AB , the ratio of products to...Ch. 15 - Solve each of the expressions for x using the...Ch. 15 - Have each group member explain to the group what...Ch. 15 - Prob. 110ECh. 15 - What is the correct expression for the equilibrium...Ch. 15 - Prob. 2SAQCh. 15 - Use the data below to find the equilibrium...Ch. 15 - The reaction shown here has a Kp = 4.5X102 AT 825...Ch. 15 - Consider the reaction between NO and Cl2 to form...Ch. 15 - Prob. 6SAQCh. 15 - Consider the reaction between iodine gas and...Ch. 15 - Prob. 8SAQCh. 15 - The decomposition of NH4HS is endothermic:...Ch. 15 - The solid XY decomposes into gaseous X and Y:...Ch. 15 - What is the effect of adding helium gas (at...Ch. 15 - Prob. 12SAQ
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- In Section 13.1 of your text, it is mentioned that equilibrium is reached in a closed system. What is meant by the term closed system. and why is it necessary to have a closed system in order for a system to reach equilibrium? Explain why equilibrium is not reached in an open system.arrow_forwardDescribe a nonchemical system that is in equilibrium, and explain how the principles of equilibrium apply to the system.arrow_forwardIn Section 17.3 of your text, it is mentioned that equilibrium is reached in a closed system. What is meant by the term “closed system,” and why is it necessary for a system to reach equilibrium? Explain why equilibrium is not reached in an open system.arrow_forward
- During an experiment with the Haber process, a researcher put 1 mol N2 and 1 mol H2 into a reaction vessel to observe the equilibrium formation of ammonia, NH3. N2(g)+3H2(g)2NH3(g) When these reactants come to equilibrium, assume that x mol H2 react. How many moles of ammonia form?arrow_forwardDefine the terms product-favored System and reactant-favored System. Give one example of each.arrow_forwardThe equilibrium constant expression for a given reaction depends on how the equilibrium equation is written. Explain the meaning of that statement. You may, if you wish, use the equilibrium equation N2(g)+3H2(g)2NH3(g) to illustrate your explanation.arrow_forward
- 5.19. Assume that a reaction exists such that equilibrium occurs when the partial pressures of the reactants and products are all . If the volume of the system were doubled, all of the partial pressures would be . Would the system still be at equilibrium? Why or Why not?arrow_forward12.101 An engineer working on a design to extract petroleum from a deep thermal reservoir wishes to capture toxic hydrogen sulfide gases present by reaction with aqueous iron(II) nitrate to form solid iron(II) sulfide. (a) Write the chemical equation for this process, assuming that it reaches equilibrium. (b) What is the equilibrium constant expression for this system? (c) How can the process be manipulated so that it does not reach equilibrium, allowing the continuous removal of hydrogen sulfide?arrow_forwardHow does equilibrium represent the balancing of opposing processes? Give an example of an “equilibrium” encountered in everyday life, showing how the processes involved oppose each other.arrow_forward
- Consider the following reactions: H2(g)+I2(g)2HI(g)andH2(g)+I2(s)2HI(g) List two property differences between these two reactions that relate to equilibrium.arrow_forward12.100 A reaction important in smog formation is O3(g)+NO(g)O2(g)+NO2(g)K=6.01034 (a) If the initial concentrations are [O3]=1.0106M,[NO]=1.0105M,[NO2]=2.5104M, and [O2]=8.2103M , is the system at equilibrium? If not, in which direction does the reaction proceed? (b) If the temperature is increased, as on a very warm day, will the concentrations of the products increase or decrease? (HINT: You may have to calculate the enthalpy change for the reaction to find out if it is exothermic or endothermic.)arrow_forwardIn the figure, orange fish are placed in one aquarium and green fish in an adjoining aquarium. The two tanks are separated by a removable partition that is initially closed. (a) Describe what happens in the first few minutes after the partition is opened. (b) What would you expect to see several hours later? (c) How is this system analogous to dynamic chemical equilibrium?arrow_forward
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