Chemical Reaction Formula The reaction of
is related to the change of substances, and the balance of the formula is the key. Now take the reaction of ammonium acetate (Ammonium Acetate) and potassium sulfide as an example.

Ammonium acetate has the molecular formula of\ (CH_ {3} COONH_ {4}\) and potassium sulfide has the molecular formula of\ (K_ {2} S\). When the two meet, a metathesis reaction occurs.

The equilibrium equation of the reaction is as follows:\ (2CH_ {3} COONH_ {4} + K_ {2} S = (CH_ {3} COO) _ {2} K + 2NH_ {4} S\).

In this reaction, the ammonium ion\ (NH_ {4 }^{+}\) in ammonium acetate and the potassium ion\ (K ^ {+}\) in potassium sulfide exchange components with each other to form a new compound.

Equilibrates this equation according to the law of conservation of mass. Before and after the chemical reaction, the type and number of atoms remain unchanged. First look at the potassium atom, potassium sulfide contains\ (2\) potassium atoms, so the product potassium acetate\ ((CH_ {3} COO) _ {2} K\) prematching coefficient\ (1\); then look at the ammonium ion, in order to make the number of ammonium ions before and after the reaction equal, ammonium acetate prematching coefficient\ (2\), so that the number of atoms before and after the reaction is equal, the equation is balanced. This equilibrium reaction formula clearly shows the material change relationship between ammonium acetate and potassium sulfide reaction, which is of great significance in chemical research and practical application, and can provide accurate theoretical basis for related experiments and industrial production.