Consider the following reaction where K, = 83.3 at 500K. PCI3(g) + Cl2(g) PCI5(g) A reaction mixture was found to contain 2.54×10-2 moles of PCI3(g), 3.91×10-2 moles of CI,(g) and 0.115 moles of PCI5(g), in a 1.00 liter container. Is the reaction at equilibrium? If not, what direction must it run in order to reach equilibrium? The reaction quotient, Qc, equals The reaction A. must run in the forward direction to reach equilibrium. B. must run in the reverse direction to reach equilibrium. C. is at equilibrium.

The equilibrium constant, K,, for the following reaction is 0.636 at 600 K: COCl,(E) CO(g) + Cl(g) Calculate the equilibrium partial pressures of all species when COC1,(g) is introduced into an evacuated flask at a pressure of 1.33 atm at 600 K. Рсос, - atm Рсо atm atm

D) all of these E) none of these 10. Consider the reaction, 2 SO2(g) + O2(g) 2 SO3(g), at t = 525°C. This reaction has an equilibrium constant Kp = 781 at this temperature If Pso, = 0.400 atm, Pso₂ = 0.050 atm, and PO2=0.050 atm, the reaction A) will proceed by forming additional SO2(g) and O₂(g). B) will proceed by forming additional SO3(g). C) is at equilibrium. D) The direction of the reaction cannot be predicted from these data. E) None of these is correct.

Matak

[References] chemist placed a mixture of CO, (g) and CF,(9) into a flask at a particular temperature. These gases react: CO2 (g) + CF (g) 2COF2 (g) Iter this mixture came to equilibrium, she found that it contained 0.42 mole fraction of CF4 and 0.16 mole fraction of COF2. Calculate K, at this temperature for this reaction.

At a certain temperature, the ?pKp for the decomposition of H2SH2S is 0.873.0.873.   H2S(g)↽−−⇀H2(g)+S(g)H2S(g)↽−−⇀H2(g)+S(g)   Initially, only H2SH2S is present at a pressure of 0.100 atm0.100 atm in a closed container. What is the total pressure in the container at equilibrium?

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At 150°C, Kp = 1.2x10- for the reaction 12(g) + Br2(g) 5 2Brl(g). A rigid cylinder at that temperature contains 0.127 atm of bromine, 0.134 atm of iodine, and 1.055 atm of bromine monoiodide. What is the value of the reaction quotient, Qp? O 55.2 62.0 O 65.4 O 88.3

Iodine and bromine react to give iodine monobromide, IBr. What is the equilibrium composition of a mixture at 150°C that initially contained 0.0015 mol each of iodine and bromine in a 5.0 L vessel? The equilibrium constant Kc for this reaction at 150°C is 1.2 x 10²   Full working please :)

12. Which balanced chemical equation corresponds to the following equilibri, constant expression? Kp Po PBr2 A) 2 NOB (g) = 2 NO (g) + Br2(g) B) NO (g) + ½ Br2 (g) = NOBr (g) C) 2 NO (g) + Br2 (g) = NOBr D) 2 NO (g) + Br2 (g) = 2 NOBR 13. You know that Kc = 2.0 at a certain temperature for the gaseous reaction A + 2B = C + 4D. What would be the value of Kc for the reaction 2C + 8D = 2A + 4B A) 2.0 B) 0.50 C) 0.25 D) 4.0