Negative Coefficient of Solubility Chemistry Demonstration

The Innovating Science Negative Coefficient of Solubility Chemical Demo kit includes a 500mL saturated calcium acetate solution. Students observe the solution precipitate upon heating and return to its original form upon cooling — the opposite of what most solubility rules predict. This demonstration teaches students that solubility rules have exceptions and that some compounds become less soluble at higher temperatures. The reversible reaction provides a visually engaging example for chemistry classrooms exploring solubility, thermodynamics, and chemical equilibrium.