When aqueous solutions of lead(II) nitrate and potassium iodide are combined

CHEMISTRY · Single correct · AP · Chemistry · Chemical Reactions · Chemical Reactions

Problem

When aqueous solutions of lead(II) nitrate and potassium iodide are combined, a yellow solid forms. Which equation best represents the net ionic equation for the reaction? (a) 2 K+(aq)+2 I−(aq)→2 KI(s)2\,\mathrm{K}^{+}(aq)+2\,\mathrm{I}^{-}(aq)\rightarrow 2\,\mathrm{KI}(s) (b) Pb2+(aq)+2 I−(aq)→PbI2(s)\mathrm{Pb}^{2+}(aq)+2\,\mathrm{I}^{-}(aq)\rightarrow \mathrm{PbI}_{2}(s) (c) Pb2+(aq)+2 NO3−(aq)→Pb(NO3)2(s)\mathrm{Pb}^{2+}(aq)+2\,\mathrm{NO}_{3}^{-}(aq)\rightarrow \mathrm{Pb(NO_{3})}_{2}(s) (d) Pb(NO3)2(aq)+2 I−(aq)→PbI2(s)+2 NO3−(aq)\mathrm{Pb(NO}_{3})_{2}(aq)+2\,\mathrm{I}^{-}(aq)\rightarrow \mathrm{PbI}_{2}(s)+2\,\mathrm{NO}_{3}^{-}(aq)

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