Consider this equilibrium reaction at 400 K. Br, (g) + Cl, (g) = 2 BRCI(g) K. = 7.0 = 0.00415 M, [Br,] If the composition of the reaction mixture at 400 K is [BrCl] is the reaction quotient, Q? = 0.00366 M, and [Cl,] = 0.000672 M, what Q = How is the reaction quotient related to the equilibrium constant, Kc, for this reaction? Q > Ko O Q < K. Q = K.

[References] The equilibrium constant for the reaction PCl, 2 PC13 + Cl2 is 0.0245 at 250.°C. What molar concentration of PCl; would be present at equilibrium if the concentrations of PCI3 and Cl2 were both 0.161 M? Molar concentration of PCI3 = M

For the equilibrium reaction.   2IBr (g) I2 (g) + Br2 (g) Kc=.0085.  If .025 M of IBr is introduced to an empty flask and allowed to reach equilibrium, calculate the final concentrations of all components.   Consider the decomposition reaction at 555 K   4POCl3 (g)    P4  (g) + 2O2  (g) + 6Cl2  (g)   If .450 atm of POCl3 is introduced to an otherwise empty flask and the reaction is allowed to reach equilibrium, the final total pressure is .850 atm.  Find Kp and Kc.

Consider this equilibrium reaction at 400 K. Br, (g) + Cl, (g) = 2BRCI(g) K. = 7.0 If the composition of the reaction mixture at 400 K is [BrCl] = 0.00520 M, [Br,] = 0.00285 M, and [Cl,] is the reaction quotient, Q? = 0.000523 M, what Q = How is the reaction quotient related to the equilibrium constant, Kc, for this reaction? Q K. O Q = K.

Consider the following reaction where K, = 6.50x10-3 at 298 K. 2NOBR(g) =2NO(g) + Br2(g) A reaction mixture was found to contain 8.79x10-2 moles of NOBR(g), 2.03x10-2 moles of NO(g), and 4.53x10 2 moles of Bro(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.

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For the reaction, 2SO2(g) + O2(g) 2SO3(g), at 450.0 K the equilibrium con¬stant, Kc, has a value of 4.62. A system was charged to give these initial concentrations, [SO3] = 0.500 M, [O2] = 0.00855 M, [SO2] = 0.254 M. In which direction will it go?   a) to the right b) to the left c) to the right or the left depending on the volume d) to the right or the left depending on the pressure e) It will remain at the same concentrations