Simple soaps, like sodium laurate, NaC₁₂H₂₂O₂, are ionic compounds with small cations and large covalent anions. These soaps are somewhat soluble in water but form a soap scum if the water is “hard,” which means it contains calcium ions Ca²⁺ or magnesium ions, Mg²⁺ . Write a net ionic equation for the formation of soap scum. Also classify the reaction type or types.