Answer:
Precipitation Reactions
They contain two aqueous reactants, one aqueous product, and one solid product. In this reaction, two soluble products, Pb(NO3)2 and KI, combine to form one soluble product, KNO3, and one insoluble product, PbI2. This is a precipitation reaction, and PbI2 is the precipitate.
The type of reaction: Pb(NO3)2 (aq) + 2KI (aq) → PbI2 + 2KNO3 (aq) is a double displacement reaction.
Double displacement reaction is a type of reaction in which the positive and negative ions of two ionic compounds exchange places to form two new compounds.
According to this question, lead nitrate reacts with pottasium iodide to form lead iodide and pottasium nitrate as follows: Pb(NO3)2 (aq) + 2KI (aq) → PbI2 + 2KNO3 (aq)
In the above equation, lead ion (Pb2+) is exchanged with pottasium ion (K+), therefore, it is a type of double displacement reaction.
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