Discussions on the net ion equation of magnesium bromide and potassium acetate
There are two compounds of magnesium bromide ($MgBr_ {2} $) and potassium acetate ($CH_ {3} COOK $). When the two are mixed in solution, the chemical reaction involved is quite critical, and the net ion equation can accurately represent the essence of its core reaction.

Magnesium bromide ionizes in aqueous solution to form magnesium ions ($Mg ^ {2 +} $) and bromine ions ($Br ^{-}$）， The ionization equation is $MgBr_ {2} = Mg ^ {2 + } + 2 Br ^ {-} $. Potassium acetate is also ionized in aqueous solution to produce potassium ions ($K ^ {+} $) and acetate ions ($CH_ {3} COO ^{-}$）， ionization equation is $CH_ {3} COOK = K ^{+} + CH_ {3} COO ^{-}$。

When the two solutions are mixed, the interaction between ions needs to be analyzed. Magnesium ions ($Mg ^ {2 + }$）、 bromine ions ($Br ^{-}$）、 potassium ions ($K ^ {+} $) and acetate ions ($CH_ {3} COO ^ {-} $) in solution, the analysis shows that no precipitation, gas or weak electrolyte will be formed between them.

According to the conditions of ion reaction, if there is no precipitation, gas or weak electrolyte formation, the ion reaction is difficult to occur. Therefore, when magnesium bromide is mixed with potassium acetate solution, there is actually no substantial chemical reaction, and the net ion equation does not exist in the usual sense of the reaction formula, that is, the solution still exists in the form of free ions such as $Mg ^ {2 + }$、$ Br ^{-}$、$ K ^{+}$、$ CH_ {3} COO ^ {-} $. This analysis clearly explains the state and relationship of ions in the mixed system of magnesium bromide and potassium acetate.