Predict the following reaction
Kl+Pb(NO3)2->?

The answer to your question is KNO₃  +  PbI₂

Explanation:

Data

Chemical reaction

                      KI  +  Pb(NO₃)₂  ⇒  

Process

We know that this is a double displacement reaction because there are two reactants and each reactant has a cation and an anion (a positive atom and a negative atom or a polyatomic molecule).

To know the products just interchange the cations in each molecule considering the oxidation numbers.

                          K⁺¹I⁻¹  +  Pb⁺²(NO₃)₂⁻¹  ⇒   K⁺¹NO₃⁻¹ + Pb⁺² I₂⁻¹

or

                          KI  +  Pb(NO₃)₂  ⇒  KNO₃  +  PbI₂