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Ch.15 - Chemical Equilibrium
All textbooksTro 4th EditionCh.15 - Chemical EquilibriumProblem 82
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Chapter 15, Problem 82

Is the question asking for something specific about the reaction: 2 H2S(g) + SO2(g) ⇌ 3 S(s) + 2 H2O(g)?

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1
Identify the type of chemical reaction. This is a reversible reaction, as indicated by the double arrow (⇌), meaning it can proceed in both forward and reverse directions.
Determine the stoichiometry of the reaction. The balanced equation shows that 2 moles of H2S react with 1 mole of SO2 to produce 3 moles of S and 2 moles of H2O.
Consider the states of matter for each component. H2S and SO2 are gases, S is a solid, and H2O is a gas in this reaction.
If the question is about equilibrium, consider the equilibrium constant expression (Kc or Kp) for the reaction. For this reaction, Kc = [H2O]^2 / ([H2S]^2 [SO2]), where the concentration of solids (S) is not included.
If the question involves Le Chatelier's Principle, analyze how changes in concentration, pressure, or temperature might shift the equilibrium position of the reaction.
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Related Practice
Textbook Question

Consider the exothermic reaction: C2H4(g) + Cl2(g) ⇌ C2H4Cl2(g) If you were trying to maximize the amount of C2H4Cl2 produced, which tactic might you try? Assume that the reaction mixture reaches equilibrium. a. increasing the reaction volume b. removing C2H4Cl2 from the reaction mixture as it forms c. lowering the reaction temperature d. adding Cl2

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Textbook Question

Consider the endothermic reaction: C2H4(g) + I2(g) ⇌ C2H4I2(g) If you were trying to maximize the amount of C2H4I2 produced, which tactic might you try? Assume that the reaction mixture reaches equilibrium. a. decreasing the reaction volume b. removing I2 from the reaction mixture c. raising the reaction temperature d. adding C2H4 to the reaction mixture

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Textbook Question

Consider the reaction: H2(g) + I2(g) ⇌ 2 HI(g) A reaction mixture at equilibrium at 175 K contains PH2 = 0.958 atm, PI2 = 0.877 atm, and PHI = 0.020 atm. A second reaction mixture, also at 175 K, contains PH2 = PI2 = 0.621 atm and PHI = 0.101 atm. Is the second reaction at equilibrium? If not, what will be the partial pressure of HI when the reaction reaches equilibrium at 175 K?

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Open Question
Is Ammonia synthesized according to the reaction N2(g) + 3H2(g) ⇌ 2NH3(g) with Kp = 5.3 * 10^-5 at 725K?
Open Question
Is the question formulated correctly regarding the extraction of hydrogen from natural gas as per the given reaction CH4(g) + CO2(g) ⇌ 2 CO(g) + 2 H2(g) with Kp = 4.5 * 10^2 at 825K?
Textbook Question

A reaction vessel at 27 °C contains a mixture of SO2 (P = 3.00 atm) and O2 (P = 1.00 atm). When a catalyst is added, this reaction takes place: 2 SO2( g) + O2( g) ⇌ 2 SO3( g). At equilibrium, the total pressure is 3.75 atm. Find the value of Kc.

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