Question

Predict and calculate the effect of temperature change on an equilibrium system. CO reacts with Cl, to form COC12. The equilibrium constant, Kp, for this reaction is 0.200 at 873 K. CO(g) + Cl2(g) 2 COCl2(g) The standard enthalpy change for this reaction (AHº) is -108 kJ/mol. (a) Predict the effect on the production of COCl2 when the temperature of the equilibrium system is increased. (b) Use the van't Hoff equation to estimate the equilibrium constant for this reaction at 983 K. Kp at 983 K =

Answer 1

. Given reaction is velut colgit (g) E coce, (g) COHO-108 kJ/mol le negative It means it is an exothermic re E a When temperature of the equillibrium ystem increased the reaction goes to backward direction because it is an exothermic reaction and production of cou, decrease according to Le Chatelied beincipal: b) van't Hoff equation ensure on the no Go k₂ = ? T₂ = 980k ki -0-2 T, =873k. long the in ts) - logle - log 18 = 0.7229 logle, - 0.30 10 tl = 0.7229 log ka 20.0239 ke = 1.0566 it is kp at 9:36