ne equilibrium constant for the reaction AZB is Kc= 0.1 at a certain temperature. If the large black heres in the drawings below represent molecules of A and the small white spheres represent molecules c - which of the drawings represents the system at equilibrium? **** None of these represent the equilibrium. (A) (B) (C) (D) (E) e here to search 11:28 AM 2/25/2021

Consider the following reaction at equilibrium: 2CO2 (g) 2CO (g) + 02 (g) AH° = -514 kJ Le Châtelier's principle predicts that adding additional O2 (g) from the reaction container will A) The reaction will shift to decrease the pressure. B) The reaction will shift in the direction of the reactants. . C) The reaction will shift in the direction of the products. D) The equilibrium constant will decrease. E) No change in the reaction

4. Sketch a graphical representation of the following events for the equilibrium below. PCIse 5 PCe + Cl ΔΗ = + 88 kJ/mol 15(g) 3(g) 2(g) a) PCI, is introduced into a flask at t=0 to a concentration of 2 mol/L. b) The flask is heated gently until no further changes in concentration of PCl, occur (5 minutes). At this time, the concentration of PCl(g) is 1.25 mol/L. c) At t=10 min an additional 0.25 mol/L of chlorine gas is injected into the flask. d) At t=15 min, no further changes in concentration were observed. Indicate the places on the graph where the system is at equilibrium. f) Use the information provided to calculate K, the equilibrium constant of this reactions. Conc'n (mol/L) Time (min)

3. Please don't write on a paper. I can't understand handwritten.