QuestionDetails: A reaction vessel at 27 0 Ccontains a mixture of SO 2 (P=3.10 a
ID: 681753 • Letter: Q
Question
QuestionDetails: A reaction vessel at 270Ccontains a mixture of SO2(P=3.10 atm) andO2(P=1.00 atm). When a catalyst is added the reaction2SO2 (g) + O2(g) 2SO3(g) takes place. At equilibrium the total pressureis 3.85 atm. Find the value ofKcPromise to rate. K8 QuestionDetails: A reaction vessel at 270Ccontains a mixture of SO2(P=3.10 atm) andO2(P=1.00 atm). When a catalyst is added the reaction2SO2 (g) + O2(g) 2SO3(g) takes place. At equilibrium the total pressureis 3.85 atm. Find the value ofKc
Explanation / Answer
2SO2 (g) + O2(g) 2SO3(g) I(atm) 3.10 1.0 0 C (atm) -2x -x +2x E(atm) 3.10 -2x 1.0 -x +2x At equilibrium total pressure = 3.85atm 3.10 - 2x + 1.0 - x + 2x = 3.85 4.1 -x = 3.85 x = 0.25 At equilibrium partial pressure of SO2 (g) = 3.10 - 2 * 0.25 =2.6 atm Partial pressure of O2(g) = 1.0 -0.25 = 0.75 atm Partialpressure of SO3(g) = 2 * 0.25 atm =0.5 atm Kp= P2SO3(g) / P2SO2PO2 =(0.5)2 / ( 2.6)2(0.75) = 0.049 Kc =Kp ( RT)n = 0.049 ( 0.0821 * 300) 2-3 =0.049 / 0.0821 * 300 = 0.00198 =0.049 / 0.0821 * 300 = 0.00198Related Questions
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