A total ionic equation is an equation in which all strong electrolytes are written as their separate dissociated ions, while weak electrolytes, precipitates, and gases are written as undissociated formulas. It shows every ion actually present in the mixture. Removing the spectator ions, which appear unchanged on both sides, gives the net ionic equation.

全离子方程式是将所有强电解质写成各自解离离子形式的方程式,而弱电解质、沉淀和气体则写成未解离的化学式。它显示了混合物中实际存在的每一种离子。略去在两侧都不变的旁观离子,即得净离子方程式。