How does the solubility product constant (K_sp) differ from the general equilibrium constant (K)?

• A. K_sp is used for liquids, while K is used for gases.
• B. K_sp is always larger than K.
• C. K_sp is specific to the dissolution of ionic solids, while K is used for any chemical equilibrium.
• D. K_sp is used for gases, while K is used for solids.

Answer: (C)