Chapter 15, Problem 41b
(b) What condition must be satisfied so that Qc = Kc?
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Phosphorus trichloride gas and chlorine gas react to form phosphorus pentachloride gas: PCl3(π) + Cl2(π) β PCl5(π). A 7.5-L gas vessel is charged with a mixture of PCl3(π) and Cl2(π), which is allowed to equilibrate at 450 K. At equilibrium the partial pressures of the three gases are πPCl3 = 0.124 atm, πCl2 = 0.157 atm, and πPCl5 = 1.30 atm. (a) What is the value of πΎπ at this temperature?
A mixture of 0.2000 mol of CO2, 0.1000 mol of H2, and 0.1600 mol of H2O is placed in a 2.000-L vessel. The following equilibrium is established at 500 K: CO2(π) + H2(π) β CO(π) + H2O (π) (d) Calculate πΎπ for the reaction.
(a) If Qc < Kc, in which direction will a reaction proceed in order to reach equilibrium?
(a) If Qc > Kc, how must the reaction proceed to reach equilibrium?
(b) At the start of a certain reaction, only reactants are present; no products have been formed. What is the value of Qc at this point in the reaction?
At 100Β°C, the equilibrium constant for the reaction COCl2(π) β CO(π) + Cl2(π) has the value πΎπ = 2.19Γ10β10. Are the following mixtures of COCl2, CO, and Cl2 at 100Β°C at equilibrium? If not, indicate the direction that the reaction must proceed to achieve equilibrium. (a) [COCl2] = 2.00Γ10β3 π, [CO] = 3.3Γ10β6 π, [Cl2] = 6.62Γ10β6π