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Chemical Equilibrium Solutions Library

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212 solutions

Chemical Equilibrium

Q. If a reaction is reversible, what are the relative amounts of reactant and product at the end of the reaction?A. no reactant; all productB. no prod...

Solved • Jun 17, 2020

Chemical Equilibrium

Q. Which one of the following statements regarding Kw is false?a. pKw is 14.00 at 25°Cb. The value of Kw is always 1.0 x 10-14.c. Kw changes with temp...

Solved • Apr 30, 2020

Chemical Equilibrium

Q. Consider the following equilibrium, for which Kp = 7.51×10−2 at 500 °C:2Cl2(g) + 2H2O(g) ⇌ 4HCl(g) + O2(g)A.) Determine the value of Kp for the fol...

Solved • Apr 21, 2020

Chemical Equilibrium

Q. The decomposition of HI(g) is represented by the equation2HI(g) = H2(g) + I2(g)The following experiment was devised to determine the equilibrium co...

Solved • Mar 31, 2020

Chemical Equilibrium

Q. The temperature dependence of the equilibrium constant (Kp) is illustrated for the following reaction:NH4ClO4(s) → NH3(g) + HClO4(g)Note: the point...

Solved • Mar 16, 2020

Chemical Equilibrium

Q. Of each of these equations, determine the change in the number of moles (change in n gas)(a) (NH4)2CO3(s) yields 2NH3 (g) + CO2 (g) + H2O (g) _____...

Solved • Mar 13, 2020

Chemical Equilibrium

Q. Which of the following is true for a system whose equilibrium constant, Kc, is much greater than one?A) The reaction mixture contains mostly produc...

Solved • Feb 17, 2020

Chemical Equilibrium

Q. The equilibrium constant forA + 2B ⇌ 3C is Kc=0.011Determine the equilibrium constant for the new reaction6C ⇌ 2A + 4BA) 91B) 8.3 × 103C) 1.2 × 10–...

Solved • Feb 17, 2020

Chemical Equilibrium

Q. HF is a weak acid with Ka = 7.2 x 10-4What is the value of the equilibrium constant for the reaction:HF(aq) + OH-(aq) ⇌ H2O(λ) + F-(aq)A. 7.2 x 10-...

Solved • Feb 7, 2020

Chemical Equilibrium

Q. A 1.0 liter container holds PCl3(g), Cl2(g), and PCl5(g) in equilibrium at 298 K.PCl3(g) + Cl2(g) ⇌ PCl5(g)       ∆H = -87.9 kJ         Kp = 3.3 x ...

Solved • Feb 7, 2020

Chemical Equilibrium

Q. We recognize a state of equilibrium whenA. the reaction goes to completionB. all molecular motion stopsC. there is no further change in any macrosc...

Solved • Feb 6, 2020

Chemical Equilibrium

Q. Consider the reaction {2A + B ⇄ C + D} with Kc1 = 7.4×10-3. Which of the following statements are correct?I Kc for the reaction {D + C ⇄ 2A + B} wo...

Solved • Feb 4, 2020

Chemical Equilibrium

Q. An important step in the industrial production of hydrogen is the reaction of carbon monoxide with water (i.e. the water gas shift reaction):CO (g)...

Solved • Dec 20, 2019

Chemical Equilibrium

Q. Which of the following statements is  true regarding equilibrium?A) At equilibrium, the rates of the forward and reverse reactions are not equal.B)...

Solved • Dec 19, 2019

Chemical Equilibrium

Q. Given the values of K shown below, determine the value of K for the reaction,2 NOCl <=> O2(g) + N2(g) + Cl2(g)1/2 N2 + 1/2 O2(g) <=> NO...

Solved • Dec 16, 2019

Chemical Equilibrium

Q. For the reaction SnO2(s) + 2 CO(g) <=> Sn(s) + 2CO2(g), Kp = 0.025 at 500 °C. The value of Kc is: a. 3.94x10-4b. 1.58c. 6.2x10-6d. 0.025e. 100

Solved • Dec 16, 2019

Chemical Equilibrium

Q. Given the values of K shown below, determine the value of K for the reaction,2 NO2(g) ⇌ N2O4(g).N2(g) + 2 O2(g) ⇌ 2 NO2(g)   K = 3,747N2(g) + 2 O2(...

Solved • Dec 12, 2019

Chemical Equilibrium

Q. For the reaction SnO2(s) + 2 CO(g) ⇌ Sn(s) + 2 CO2(g), Kp = 0.025 at 500 ºC. The value of Kc is:a. 3.91x10-7b. 1.59c. 6.25x10-4d. 0.025e. 100.6

Solved • Dec 12, 2019

Chemical Equilibrium

Q. At a certain temperature, Kp for the reaction,Br2(g) ⇌ 2 Br(g) is 1,130.3.Calculate the value of Kp for the reaction,1/2 Br2(g) ) ⇌ Br(g)a. 565.15b...

Solved • Dec 12, 2019

Chemical Equilibrium

Q. Given the values of K shown below, determine the value of K for the reaction,N2(g) + 2 O2(g) <=> 2 NO2(g).N2(g) + O2(g) <=> 2 NO(g)    ...

Solved • Dec 11, 2019

Chemical Equilibrium

Q. Calculate Kp for the following reaction:3 O2(g) <=> 2 O3(g);Kc = 816 at 77 °CGive your answer to 3 decimal places.A. 23446.380B. 28.397C. 515...

Solved • Dec 11, 2019

Chemical Equilibrium

Q. At a certain temperature, Kp for the reaction,Cl2(g) <=> 2 Cl(g) is 1,317.Calculate the value of K p for the reaction,1/2 Cl2(g) ) <=> ...

Solved • Dec 11, 2019

Chemical Equilibrium

Q. At 1000 K, Kc = 2.23 × 1022 for the reaction:     2 CO(g) + O2(g) ⇌ 2 CO2(g)What is Kc for the following reaction:6 CO2(g) ⇌ 6 CO(g) + 3 O2(g)A. 9....

Solved • Nov 18, 2019

Chemical Equilibrium

Q. Ozone and atomic oxygen are in equilibrium with molecular oxygen:O3(g) + O(g) ⇌ 2 O2(g)At 2300 °C, Kc = 2.5 x 1012. What is Kp for this reaction?A....

Solved • Nov 13, 2019

Chemical Equilibrium

Q. Which of the following statements MUST be true if Kc = 1.8 × 10–20A. The reaction favors products at equilibriumB. The reaction favors reactants at...

Solved • Nov 12, 2019

Chemical Equilibrium

Q. Which of the following conditions indicate equilibrium has been reached?I. Qc = KcII. rateforward = ratereverseIII. [Reactants] = [Products]A. I on...

Solved • Nov 12, 2019

Chemical Equilibrium

Q. Consider the Haber process, 3 H2(g) + N2(g) ↔ 2 NH3(g). What is the correct expression for Kp of those below? (all concentrations are at equilibriu...

Solved • Nov 12, 2019

Chemical Equilibrium

Q. Consider the reaction, NH4+(aq) + OH-(aq) ↔ NH3(aq) + H2O(l), for which Keq = 5.6 × 106. Which of the following can be deduced from the value of th...

Solved • Nov 12, 2019

Chemical Equilibrium

Q. Given the values of K shown below, determine the value of K for the reaction,N2(g) + 2 O2(g) <=> 2 NO2(g).N2(g) + O2(g) <=> 2 NO(g)    ...

Solved • Nov 1, 2019

Chemical Equilibrium

Q. Calculate Kp for the following reaction:H2(g) + CO2(g) <=> H2O(g) + CO(g); Kc = 73 at 250 °CGive your answer to 3 significant figuresA. 3132....

Solved • Nov 1, 2019

Chemical Equilibrium

Q. At a certain temperature, Kp for the reaction,Br2(g) <=> 2 Br(g) is 7,440.7.Calculate the value of Kp for the reaction,1/2 Br2(g) ) <=>...

Solved • Nov 1, 2019

Chemical Equilibrium

Q. In which reaction does Kp = Kc? a) NO(g) + O2(g) <--> N2O3(g) b) N2(g) + O2(g) <--> 2NO(g) c) CaCO3(s) <--> CaO(s) + CO2(g) d) N2...

Solved • Aug 7, 2019

Chemical Equilibrium

Q. PART A. What is dynamic equilibrium?(A) Dynamic equilibrium in a chemical reaction is the condition in which the rate of the forward reaction is hi...

Solved • Aug 7, 2019

Chemical Equilibrium

Q. What condition(s) must occur when a chemical reaction is at equilibrium? a. The forward and reverse reactions are happening at equal rates. b. The ...

Solved • Jul 10, 2019

Chemical Equilibrium

Q. The equilibrium between NO2 and N2O4.If you were to let the tube on the right sit overnight and then take another picture would the brown col...

Solved • Dec 11, 2018

Chemical Equilibrium

Q. Is it possible to have a reaction where Kc=Kp?

Solved • Dec 11, 2018

Chemical Equilibrium

Q. The following diagrams represent a hypothetical reaction A , with A represented by red spheres and B represented by blue spheres. The sequence from...

Solved • Dec 11, 2018

Chemical Equilibrium

Q. The following diagrams represent a hypothetical reaction A , with A represented by red spheres and B represented by blue spheres. The sequence from...

Solved • Dec 11, 2018

Chemical Equilibrium

Q. Suppose that the gas-phase reactions A → B and B→ A are both elementary processes with rate constants of 4.7 x 10-3 s-1 and 5.8 x 10-1 s-1, respect...

Solved • Dec 11, 2018

Chemical Equilibrium

Q. The following diagram represents an equilibrium mixture produced for a reaction of the type A + X .Is K greater or smaller than 1 if the volume is ...

Solved • Dec 11, 2018

Chemical Equilibrium

Q. The following diagram represents a reaction shown going to completion. Each molecule in the diagram represents 0.1 mol, and the volume of the box i...

Solved • Dec 11, 2018

Chemical Equilibrium

Q. The following diagram represents a reaction shown going to completion. Each molecule in the diagram represents 0.1 mol, and the volume of the box i...

Solved • Dec 11, 2018

Chemical Equilibrium

Q. An equilibrium mixture of H2, I2, and HI at 458 oC contains 0.112 mol H2, 0.112 mol I2, and 0.775 mol HI in a 5.00-L vessel.What are the equilibriu...

Solved • Dec 11, 2018

Chemical Equilibrium

Q. The protein hemoglobin (Hb) transports O2 in mammalian blood. Each Hb can bind 4 O2 molecules. The equilibrium constant for the O2-binding reaction...

Solved • Dec 11, 2018

Chemical Equilibrium

Q. The reaction A2 + B2 ⇌ 2 AB has an equilibrium constant Kc =1.5. The following diagrams represent reaction mixtures containing A2 molecules (red), ...

Solved • Dec 11, 2018

Chemical Equilibrium

Q. The reactions shown here can be combined to make the overall reaction C(s) + H2O(g) ⇌ CO(g) + H2(g) by reversing some and/or dividing all the coeff...

Solved • Dec 11, 2018

Chemical Equilibrium

Q. Consider the following reaction and corresponding value of Kc: H2(g) + I2(g) ⇌ 2HI(g); Kc = 6.2 x 102  at 25 oCWhat is the value of Kp K_{ m p}at t...

Solved • Dec 11, 2018

Chemical Equilibrium

Q. Calculate Kp for each of the following reactions: N2(g) + 3H2(g) ⇌ 2NH3(g); Kc = 3.7 x 108 (at 298 K)

Solved • Dec 11, 2018

Chemical Equilibrium

Q. Calculate Kp for each of the following reactions: N2(g) + O2(g) ⇌ 2NO(g); Kc = 4.10 x 10–31 (at 298 K)

Solved • Dec 11, 2018

Chemical Equilibrium

Q. Calculate Kc for each reaction: I2 (g) ⇌ 2I(g); Kp = 6.26 x 10–22 (at 298 K)

Solved • Dec 11, 2018

Chemical Equilibrium

Q. Calculate Kc for each reaction: CH4(g) + H2O(g) ⇌ CO(g) + 3H2(g); Kp = 7.7 x 1024 (at 298 K)

Solved • Dec 11, 2018

Chemical Equilibrium

Q. Calculate Kc for each reaction: I2(g) + Cl2(g) ⇌ 2ICl(g); Kp = 81.9 (at 298 K)

Solved • Dec 11, 2018

Chemical Equilibrium

Q. A particular reaction has an equilibrium constant of Kp = 0.50. A reaction mixture is prepared in which all the reactants and products are in their...

Solved • Dec 11, 2018

Chemical Equilibrium

Q. Use the data shown here to find the equilibrium constant (Kc) for the reaction A(g) ⇌ 2B(g) + C(g).A(g) ⇌ 2X(g) + C(g); Kc = 2.01B(g) ⇌ X(g); Kc = ...

Solved • Dec 11, 2018

Chemical Equilibrium

Q. The reaction has an equilibrium constant Kp = 2.2 x 106 at 298 K: 2 COF2(g) ⇌ CO2(g) + CF4(g)Calculate Kp for the reaction: 6COF2(g) ⇌ 3CO2(g) + 3C...

Solved • Dec 11, 2018

Chemical Equilibrium

Q. Under which circumstances are Kp and Kc equal for the reaction aA(g) + bB(g) ⇌ cC(g) + dD(g)?

Solved • Dec 11, 2018

Chemical Equilibrium

Q. Use the reactions below and their equilibrium constants to predict the equilibrium constant for the reaction 2 A(s) ⇌ 3 D(g).A(s) ⇌ 1/2  ightleftha...

Solved • Dec 11, 2018

Chemical Equilibrium

Q. Nitrogen dioxide dimerizes according to the following reaction: 2 NO2(g) ⇌ N2O4(g); Kp = 6.7298A 2.35-L container contains 0.056 mol of NO2 and 0.0...

Solved • Dec 11, 2018

Chemical Equilibrium

Q. Consider the following reactions and their respective equilibrium constants:NO(g) + 1/2 Br2(g) ⇌ NOBr(g); Kp = 5.32 NO(g) ⇌ N2(g) + O2(g); Kp = 2.1...

Solved • Dec 11, 2018

Chemical Equilibrium

Q. A chemist trying to synthesize a particular compound attempts two different synthesis reactions. The equilibrium constants for the two reactions ar...

Solved • Dec 11, 2018

Chemical Equilibrium

Q. When the following reaction comes to equilibrium, will the concentrations of the reactants or products be greater?A(g) + B(g) ⇌ 2 C(g); Kc = 1.4 x ...

Solved • Dec 11, 2018

Chemical Equilibrium

Q. H2 and I2 are combined in a flask and allowed to react according to the following reaction: H2(g) + I2(g) ⇌ 2 HI(g)Examine the figures (sequential ...

Solved • Dec 11, 2018

Chemical Equilibrium

Q. Do the equilibrium concentrations of the reactants and products depend on their initial concentrations?

Solved • Dec 11, 2018

Chemical Equilibrium

Q. If two reactions sum to an overall reaction, and the equilibrium constants for the two reactions are K1 and K2, what is the equilibrium constant fo...

Solved • Dec 11, 2018

Chemical Equilibrium

Q. The molecular scene depicts a gaseous equilibrium mixture at 460°C for the reaction of H2 (blue) and I2 (purple) to form HI. The molecule represent...

Solved • Nov 28, 2018

Chemical Equilibrium

Q. Isomers Q (blue) and R (yellow) interconvert. They are depicted in an equilibrium mixture in scene A. Scene B represents the mixture after addition...

Solved • Nov 8, 2018

Chemical Equilibrium

Q. The oxidation of nitrogen monoxide is favored at 457 K:           2NO(g) + O 2(g) ⇌ 2NO2(g)           Kp = 1.3×104(a) Calculate Kc at 457 K.

Solved • Nov 7, 2018

Chemical Equilibrium

Q. Calculate Kp for the following equilibria:(b) 3O2(g) ⇌ 2O3(g); Kc = 1.8×10−56 at 570. K

Solved • Nov 7, 2018

Chemical Equilibrium

Q. Calculate Kp for the following equilibria:(a) N2O4(g) ⥫⥬ 2NO2(g); Kc = 6.1×10−3 at 298 K

Solved • Nov 7, 2018

Chemical Equilibrium

Q. Calculate Kc for the following equilibria:(b) 2SO2(g) + O2(g) ⥫ 2SO3(g); Kp = 2.5×1010 at 500. K

Solved • Nov 7, 2018

Chemical Equilibrium

Q. Calculate Kc for the following equilibria:(a) H2(g) + I2(g) ⥫⥬ 2HI(g); Kp = 49 at 730. K

Solved • Nov 7, 2018

Chemical Equilibrium

Q. Calculate Kc for the following equilibria:(b) S2(g) + C(s) ⥫⥬ CS2(g); Kp = 28.5 at 500. K

Solved • Nov 7, 2018

Chemical Equilibrium

Q. Calculate Kc for the following equilibria:(a) CO(g) + Cl2(g) ⥫⥬ COCl2(g); Kp = 3.9×10−2 at 1000. K

Solved • Nov 7, 2018

Chemical Equilibrium

Q. Determine Δngas for the following reaction:(b) 2H2(g) + O2(g) ⥫⥬ 2H2O(l)

Solved • Nov 7, 2018

Chemical Equilibrium

Q. Determine Δngas for the following reaction:(a) MgCO3(s) ⥫⥬ MgO(s) + CO2(g)

Solved • Nov 7, 2018

Chemical Equilibrium

Q. Determine Δngas for the following reaction:(c) I2(s) + 3XeF2(s) ⥫⥬ 2IF3(s) + 3Xe(g)

Solved • Nov 7, 2018

Chemical Equilibrium

Q. Determine Δngas for the following reaction:(b) 2PbO(s) + O2(g) ⥫⥬ 2PbO2(s)

Solved • Nov 7, 2018

Chemical Equilibrium

Q. As an EPA scientist studying catalytic converters and urban smog, you want to find Kc for the following reaction:2NO2(g) ⇌ N2(g) + 2O2(g)          ...

Solved • Nov 7, 2018

Chemical Equilibrium

Q. At a particular temperature, Kc = 1.6×10−2 for 2 H2S(g) ⇌ 2H2(g) + S2(g)Calculate Kc for the following reaction:(a) 1/2 S2(g) + H2(g) ⇌ H2S(g)

Solved • Nov 7, 2018

Chemical Equilibrium

Q. Given the following equilibrium constants at 427ºC,Na2O(s) ⇌ 2Na(l) + 1/2 O2(g)                K 1 = 2 x 10 -25NaO(g) ⇌ Na(l) + 1/2 O2(g)          ...

Solved • Nov 4, 2018

Chemical Equilibrium

Q. At 1100 K, Kp = 0.25 for the reaction2SO2(g) + O2(g) ⇌ 2SO3(g)What is the value of K at this temperature?

Solved • Nov 4, 2018

Chemical Equilibrium

Q. At 327ºC, the equilibrium concentrations are [CH 3OH] = 0.15 M, [CO] = 0.24 M, and [H2] = 1.1 M for the reactionCH3OH(g) ⇌ CO(g) + 2H2(g)Calculate ...

Solved • Nov 4, 2018

Chemical Equilibrium

Q. For the reactionH2(g) + Br2(g) ⇌ 2HBr(g)              Kp = 3.5 x 104 at 1495 K. What is the value of Kp for the following reactions at 1495 K?a. HB...

Solved • Nov 3, 2018

Chemical Equilibrium

Q. At a given temperature, K = 1.3 x 10 -2 for the reactionN2(g) + 3H2(g) ⇌ 2NH3(g)Calculate values of K for the following reactions at this temperatu...

Solved • Nov 3, 2018

Chemical Equilibrium

Q. The following reaction occurs when a burner on a gas stove is lit:CH4(g) + 2O2(g) ⇌ CO2(g) + 2H2 O(g)Is an equilibrium among CH4, O2, CO2, and H2O ...

Solved • Oct 31, 2018

Chemical Equilibrium

Q. Convert the values of Kc to values of KP or the values of KP to values of Kc.(d) H2 O(l) ⇌ H2 O(g)     KP = 0.196 at 60 °C

Solved • Oct 31, 2018

Chemical Equilibrium

Q. Convert the values of Kc to values of KP or the values of KP to values of Kc.(b) 2SO2(g) + O2(g) ⇌ 2SO3(g)       KP = 48.2 at 500 °C

Solved • Oct 31, 2018

Chemical Equilibrium

Q. Convert the values of Kc to values of KP or the values of KP to values of Kc.(a) Cl2(g) + Br2(g) ⇌ 2BrCl(g)              K c = 4.7 × 10−2 at 25 °C

Solved • Oct 31, 2018

Chemical Equilibrium

Q. Convert the values of Kc to values of KP or the values of KP to values of K c.(a) N2(g) + 3H2(g) ⇌ 2NH3(g)            K c = 0.50 at 400 °C

Solved • Oct 31, 2018

Chemical Equilibrium

Q. Which of the systems described below give homogeneous equilibria? Which give heterogeneous equilibria?

Solved • Oct 31, 2018

Chemical Equilibrium

Q. The concept of chemical equilibrium is very important.Which one of the following statements is the most correct way to think about equilibrium?(a) ...

Solved • Oct 31, 2018

Chemical Equilibrium

Q. Benzene is one of the compounds used as octane enhancers in unleaded gasoline. It is manufactured by the catalytic conversion of acetylene to benze...

Solved • Oct 31, 2018

Chemical Equilibrium

Q. If you observe the following reaction at equilibrium, is it possible to tell whether the reaction started with pure NO2 or with pure N2O4?2NO2(g) ⇌...

Solved • Oct 31, 2018

Chemical Equilibrium

Q. Explain why an equilibrium between Br 2(l) and Br2(g) would not be established if the container were not a closed vessel shown in Figure 13.5.Figur...

Solved • Oct 31, 2018

Chemical Equilibrium

Q. For the system NH2OH + CH3NH3+ ⇌ CH3NH2 + NH3OH+ the position of the equilibrium lies to the left. Which is the strongest acid in the system? (a) N...

Solved • Sep 26, 2018

Chemical Equilibrium

Q. For chemical reactions involving ideal gases, the equilibrium constant K can be expressed either in terms of the concentrations of the gases (in M)...

Solved • Sep 24, 2018

Chemical Equilibrium

Q. The steam reformation reaction is an important source of H2 (at 750°C): CH4 (g) + H2O (g) ⇌ CO (g) + 3H2 (g) Use the following information to calcu...

Solved • Aug 21, 2018

Chemical Equilibrium

Q. The Keq for the reaction: A + B ⇌ AB is 7 What is the Keq for 3 AB ⇌ 3A + 3B?

Solved • Aug 14, 2018

Chemical Equilibrium

Q. A reaction vessel at 27 °C contains a mixture of SO2 (P = 3.10 atm) and O2 (P = 1.10 atm). When a catalyst is added the reaction 2SO2 (g) + O2 (g) ...

Solved • Aug 1, 2018

Chemical Equilibrium

Q. The equilibrium constant for the chemical equation N2 (g) + 3H2 (g) ⇌ 2NH3 (g) is Kp = 1 01 at 209°C. Calculate the value of the Kc for the reactio...

Solved • Jul 25, 2018