Question

Q(18) NI(CO)49) - Ni(s) + 4 CO(g)Adding nickel (solid) to this reaction will cause the equilibrium to A) Shift toward the products B) Shift toward the reactants C) remain unchanged D) increase the temperature E) it depends on the amount added Q(19) CO2 + H2 -CO + H2O Adding a catalyst to this reaction will cause the COD at equilibrium to A) Shift toward the products B) Shift toward the reactants C) remain unchanged D) increase the temperature E) it depends on the amount added Q(20) Q = the reaction quotient k = the equilibrium constant. At equilibrium, which is true? A) K<Q B) K=Q CK> Q D ) K=Q2E ) KEQ will Q(21) If the value of the equilibrium constant is small, then at equilibrium mostly be present. A) Reactants B) Water C) Products D) Precipitate E) Catalysts Q(22) Ko=Kc when? A) The reaction is at equilibrium B) The reaction is exothermic C) The reaction is endothermic D) all of the gasses present are at the same temperature E) the number of moles of gas on both sides of the balanced equation is the same. Q(23) HA-H A at the equilibrium [HA] = 1.65 10-2 M and [H'] = [A-1 = 5.44*10Mat equilibrium. Kc = A) 1.7 X 10-1 C) 1.7 X 109 D) 1.7 X 104 B) 1.7 X 10 .7 X 10% Q(24) Select the statement that best describes a system at equilibrium. A) The reaction is complete because all reactants have become products. B) The reaction has stopped because all of the catalyst has been used. C) As soon as product molecules form, other molecules of product become reactants. D) The reaction stops when the amounts of reactants and products reach equilibrium amounts E) None of the above Q(25) Which of the following is the expression that relates Keto Kp? A) Kc = KR/T B) KcKp = RTN D) Kp = KP/RT C) K = KJ(RT) C) Kp = K(RT

Answer 1

e. remain emchanged 99 1 c. remain unchanged 13. kad 81 H Reactants E ke= 8.unxiol & 5. uux104 1.65x15 2. AM = E= 1.7x105 en D. (15) c. kp=ke (RT) An