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Part B The following reaction was performed in a sealed vessel at 755 °C : H2 (g) +I2(g) = 2HI(g) Initially, only H2 and I2 were present at concentrations of [H2] = 3.90M and [I2] = 2.80M . The equilibrium concentration of I2 is 0.0300 M. What is the equilibrium constant, Kc, for the reaction at this temperature?

Part B The following reaction was performed in a sealed vessel at 755 °C : H2 (g) +I2(g) = 2HI(g) Initially, only H2 and I2 were present at concentrations of [H2] = 3.90M and [I2] = 2.80M . The equilibrium concentration of I2 is 0.0300 M. What is the equilibrium constant, Kc, for the reaction at this temperature?

Chemistry
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Please answer question 4 Part A and B

Deriving concentrations from data In Part A, you were given the equilibrium pressures, which could be plugged directly into the formula for K. In Part B however, you will be given initial concentrations and only one equilibrium concentration. You must use this data to find all three equilibrium concentrations before you can apply the formula for K. Part B The following reaction was performed in a sealed vessel at 755 °C : H2 (g) + I2(g) = 2HI(g) Initially, only H2 and I2 were present at concentrations of (H2] = 3.90M and [I2] = 2.80M. The equilibrium concentration of I2 is 0.0300 M. What is the equilibrium constant, Ke, for the reaction at this temperature? Express your answer numerically. • View Available Hint(s) ΑΣφ K. %3D
Transcribed Image Text:Deriving concentrations from data In Part A, you were given the equilibrium pressures, which could be plugged directly into the formula for K. In Part B however, you will be given initial concentrations and only one equilibrium concentration. You must use this data to find all three equilibrium concentrations before you can apply the formula for K. Part B The following reaction was performed in a sealed vessel at 755 °C : H2 (g) + I2(g) = 2HI(g) Initially, only H2 and I2 were present at concentrations of (H2] = 3.90M and [I2] = 2.80M. The equilibrium concentration of I2 is 0.0300 M. What is the equilibrium constant, Ke, for the reaction at this temperature? Express your answer numerically. • View Available Hint(s) ΑΣφ K. %3D
The equilibrium constant, K, of a reaction at a particular temperature is determined by the concentrations or pressures of the reactants and products at equilibrium. Part A For a gaseous reaction with the general form aA + bB = cC+ dD Phosgene (carbonyl chloride), COCl2 , is an extremely toxic gas that is used in manufacturing certain dyes and plastics. Phosgene can be produced by reacting carbon monoxide and chlorine gas at high temperatures: the Kc and Kp expressions are given by СО(g) + Cl>(в) — COCL2 (g) [C]*D]« [A]“[B]* Carbon monoxide and chlorine gas are allowed to react in a sealed vessel at 464 °C. At equilibrium, the concentrations were measured and the following results obtained: (Pc)°(P»)ª Kp Partial Pressure Gas (atm) (PA)“(P3)* CO 0.890 The subscript c or p indicates whether K is expressed in terms of concentrations or pressures. Equilibrium-constant expressions do not include a term for any pure solids or liquids that may be involved since their composition does not change throughout the reaction. The standard state of a pure substance is the pure substance itself, and although the quantity may change the sample remain pure. The constant value is incorporated into the value of K, and does not need to be accounted for separately. Cl2 1.15 COC2 0.260 What is the equilibrium constant, Kp, of this reaction? Express your answer numerically. • View Available Hint(s) DA ΑΣφ ? Kp = %3D
Transcribed Image Text:The equilibrium constant, K, of a reaction at a particular temperature is determined by the concentrations or pressures of the reactants and products at equilibrium. Part A For a gaseous reaction with the general form aA + bB = cC+ dD Phosgene (carbonyl chloride), COCl2 , is an extremely toxic gas that is used in manufacturing certain dyes and plastics. Phosgene can be produced by reacting carbon monoxide and chlorine gas at high temperatures: the Kc and Kp expressions are given by СО(g) + Cl>(в) — COCL2 (g) [C]*D]« [A]“[B]* Carbon monoxide and chlorine gas are allowed to react in a sealed vessel at 464 °C. At equilibrium, the concentrations were measured and the following results obtained: (Pc)°(P»)ª Kp Partial Pressure Gas (atm) (PA)“(P3)* CO 0.890 The subscript c or p indicates whether K is expressed in terms of concentrations or pressures. Equilibrium-constant expressions do not include a term for any pure solids or liquids that may be involved since their composition does not change throughout the reaction. The standard state of a pure substance is the pure substance itself, and although the quantity may change the sample remain pure. The constant value is incorporated into the value of K, and does not need to be accounted for separately. Cl2 1.15 COC2 0.260 What is the equilibrium constant, Kp, of this reaction? Express your answer numerically. • View Available Hint(s) DA ΑΣφ ? Kp = %3D
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