Pb(NO3)2 + 2KI ---> PbI2↓ + 2KNO3
the precipitation reaction
When lead (II) nitrate is mixed with potassium iodide, a double displacement reaction occurs, producing a yellow precipitate of lead (II) iodide. The reaction can be described by the equation 2KI(aq) + Pb(NO₃)₂(aq) → 2KNO₃(aq) + PbI₂(s). This is an important example of precipitation reactions in chemistry.
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