AP Chem Unit 13

Daily Answer Key

 

  1. B
  2. A
  3. C
  4. D
  5. A
  6. D
  7. A
  8. A
  9. A
  10. B
  11. B
  12. C
  13. B
  14. a) K = [H2O]2

[H2]2[O2]

            b) K = [Cl-]2[Fe3+]2

                        [Cl2][Fe2+]2

            c) K = [Cu(NH3)42+]

                        [Cu2+][NH3]4

  1. a) K = [H2]2[S2]

[H2S]2

            b) K = [NH3]4[O2]7

                        [NO2]4[H2O]6

            c) K = [NO2]2[H2]7

                        [NH3]2[H2O]4

            d) K = [PCl3][Cl2]

                        [PCl5]

  1. Kp = 1.6 x 1012atm-1
  2. 1.4
  3. a) K = [NH3]2

[N2][H2]3

            b) K = [ICl]2

                        [Cl2]

            c) K = [BF3]2

                        [F2]3

  1. K = 10 where K = [products]

      [reactants]

  1. K' = 55.6
  2. K = Kp(RT)-Δn = Kp(RT) → K = 3.9 x 1013
  3. p(CO2) = 0.201 atm; p(CO) = 0.549
  4. p(PCl5) = 0.023 atm, p(PCl3) = 0.177 atm, p(Cl2) = 0.277 atm
  5. a) to the left

b) to the right

c) no shift- the equilibrium is at equilibrium

  1. Q = 0.065
  2. [NO] = 6.9 x 10-5 M; [N2] = [O2] = 3.4 x 10-3
  3. [NO] = 1.4 x 10-2 M; [N2] = 0.850 M; [O2] = 0.560 M
  4. [H+] = 5.07 x 10-5 M
  5. [NH3] = 0.198 M; [OH-] = [NH4+] = 1.9 x 10-3M
  6. 3.2 x 102
  7. [SbCl3] = 7.3 x 10-3M; [Cl2] = 0.627 M; [SbCl5] = 0.173 M
  8. The reaction would move left to right (fewer moles on the right side).
  9. a) The reaction moves to the left.

b) The reaction moves to the right.

  1. Adding NH3(g) drives the reaction to the left.
  2. Any factor that will drive the system to the right.