IMAT 2016 Q42[Ionic Equations]

Lead(II) nitrate solution and potassium iodide solution react to form potassium nitrate in solution and a bright yellow precipitate of lead(II) iodide.

Which one of the following correctly represents the ionic equation for this chemical reaction?

A. Pb^{2+}(aq) + I^–(aq) → PbI(s)

B. Pb^{2+}(aq) + I^{2–}(aq) → PbI(s)

C. Pb^+(aq) + 2I^–(aq) → PbI_2(s)

D. Pb^{2+}(aq) + 2I^–(aq) → PbI_2(s)

E. Pb^+(aq) + I^–(aq) → PbI(s)