<u>Answer:</u> The solubility equilibrium equation is written below.
<u>Explanation:</u>
Solubility is defined as the maximum amount of solute that can be dissolved in a solvent at equilibrium.
Solubility product is defined as the product of concentration of ions present in a solution each raised to the power its stoichiometric ratio. It is represented as ![K_{sp}](https://tex.z-dn.net/?f=K_%7Bsp%7D)
Calcium lactate is an ionic compound formed by the combination of 1 calcium ion and 2 lactate ions.
The equilibrium reaction for the ionization of calcium lactate follows the equation:
![Ca(C_3H_5O_3)_2(s)\rightleftharpoons Ca^{2+}(aq.)+2(C_3H_6O_3)^-(aq.)](https://tex.z-dn.net/?f=Ca%28C_3H_5O_3%29_2%28s%29%5Crightleftharpoons%20Ca%5E%7B2%2B%7D%28aq.%29%2B2%28C_3H_6O_3%29%5E-%28aq.%29)
The solubility product for the above reaction is:
![K_{sp}=[Ca^{2+}]\times [C_3H_6O_3^-]^2](https://tex.z-dn.net/?f=K_%7Bsp%7D%3D%5BCa%5E%7B2%2B%7D%5D%5Ctimes%20%5BC_3H_6O_3%5E-%5D%5E2)
Hence, the solubility equilibrium equation is written above.