Ask if potassium acetate is insoluble
A student asked Yu Shi: "If you dare to ask potassium acetate, its nature is insoluble?"
Shi Yingzhi said: "Potassium acetate is a non-insoluble thing. In water, it is soluble and dissociated, and potassium ions and acetate ions are dispersed in water. Looking at the common rules for the solubility of salts, acetate is more soluble, and potassium salts are also soluble, so potassium acetate can dissolve in water."
Sheng asked again: "How do you know that it dissociates in water?"
The teacher said: "Because its solution can conduct electricity. Ions swim in water and form a conductive path. This is the sign of electrolyte. Potassium acetate is soluble and can make the solution conductive, so it must be dissociated without a doubt. "