The ionic reaction of potassium acetate and silver nitrate
is mixed, and the ionic reaction is the first ionization of the two. The ionization of potassium acetate ($CH_ {3} COOK $) in water is $CH_ {3} COO ^ {-} $and $K ^ {+} $, and the ionization of silver nitrate ($AgNO_ {3} $) is $Ag ^ {+} $and $NO_ {3 }^{-}$ 。

When the two solutions blend, $Ag ^ {+} $and $CH_ {3} COO ^ {-} $can bind, and the raw silver acetate ($CH_ {3} COOAg $) precipitates. The chemical reaction equation is: $CH_ {3} COOK + AgNO_ {3} = CH_ {3} COOAg? + KNO_ {3} $.

The soluble strong electrolyte is split into ions and rewritten as the ionic equation: $CH_ {3} COO ^{-} + K ^{+} + Ag ^{+} + NO_ {3 }^{-} = CH_ {3} COOAg? + K ^{+} + NO_ {3 }^{-}$ 。

Delete the unreacted ions ($K ^ {+} $and $NO_ {3 }^{-}$）， on both sides of the equation to obtain the net ionic equation of potassium acetate and silver nitrate: $CH_ {3} COO ^{-} + Ag ^{+} = CH_ {3} COOAg? $. This is the key ionic reaction that occurs when the two are mixed. From the perspective of ions, the essence of chemical changes in the solution is revealed.