Complete the two acid dissociation reactions for the ethylenediammonium ion and select the correct symbol for the equilibrium constant for each reaction. Step 1: NH*CH,CH,NH(aq) = What is the symbol for the equilibrium contant for step 1? Kb2 K₂2 Kal Kbl Step 2: NH,CH,CH,NH;(aq) — What is the symbol for the equilibrium constant for step 2?

Suppose a 250. mL flask is filled with 1.9 mol of O₂ and 1.7 mol of NO. The following reaction becomes possible: 2 N₂(g) + O₂(g) → 2NO(g) The equilibrium constant K for this reaction is 0.855 at the temperature of the flask. Calculate the equilibrium molarity of O₂. Round your answer to two decimal places. M Ś ?

Consider the reaction, PCI5(g) = PCI3(g)+ Cl2(g) where the value for Kc is 5.1 x 10- 5. The initial concentration of PCI5 is 1.16 M. What is the concentration (molarity) of PCI3 at equilibrium? Report your answer to two decimal places using scientific notation. X ÷ T ab ab () ?

Hi, I only need help with question # 3.    Equilibrium Write the equilibrium expressions for the following reactions:a) 3Fe(s) + 4H2O(g) ↔ Fe3O4(s) + 4H2(g)b) CH3COOH(aq) + H2O(l) ↔ CH3COO-(aq) + H3O+(aq)c) N2(g) + 3Br2(g) ↔ 2NBr3(s)d) CaCl2(s) ↔ Ca2+(aq) + 2Cl-(aq) Consider the following equilibrium:  CH3COOH(l) + C2H5OH(l) ↔ CH3CO2C2H5(l) + H2O(l) Keq =2.2 What must the concentration of water be for a mixture with [CH3COOH]= 0.10M, [CH3CO2C2H5]=2.0M, [C2H5OH]= 5.0M to be at equilibrium? Note: water is NOT the solvent in this reaction, therefore it will be included in the equilibrium expression.     3. Predict the direction of the following equilibrium shifts (Please label Forward (F) or Reverse (R)):   a) H2O (g) + CO(g)↔ H2(g) + CO2(g) Water is removed? ___Hydrogen is added? ___Carbon monoxide is added? ___b) 4Fe(s) + 3O2(g) ↔ 2Fe2O3(s) + 1648 kJThe temperature is increased? ___The pressure is increased? ___c) CaCl2(aq) ↔ Ca2+(aq) + 2Cl-(aq) NaCl is added? ___AgNO3 is added? ___