To investigate the inverse formula of
, there are currently acetic acid ($CH_ {3} COOK $) and acetic acid ($Na_ {2} CrO_ {4} $), and to seek its equilibrium inverse formula.

Acetate is formed from acetate seed ($CH_ {3} COO ^ {-} $) and acetate seed ($K ^ {+} $). In the case of acid, it is formed from acetate seed ($CrO_ {4} ^ {2 -} $) and acetate seed ($Na ^ {+} $).

The two meet and decompose. Acetate seed and acid seed combine.

Preliminary inverse formula: $CH_ {3} COOK + Na_ {2} CrO_ {4}\ longrightarrow CH_ {3} COONa + K_ {2} CrO_ {4} $.

However, this formula is not balanced, and it is observed that the atom is not equal to the left and right. To balance the equation, it is necessary to add 2 dollars $before the acetic acid. The balanced inverse formula is as follows:

$2CH_ {3} COOK + Na_ {2} CrO_ {4}\ longrightarrow 2CH_ {3} COONa + K_ {2} CrO_ {4} $.

This equation is equal to the left and right atoms, which conforms to the law of conservation of quantity, and is the equilibrium of acetic acid.