Identify the rigorously true definitive statements regarding the precise "Gold Number" as mathematic — Surface Chemistry Chemistry Question

💡 Solution & Explanation

Statement A represents the completely exact volumetric and mass standard definition of the gold sol used. Statement B specifies the strictly standardized amount and heavy concentration of the active coagulating electrolyte trigger. Statement C is unequivocally mathematically false; a strictly smaller gold number proves that much less mass is fundamentally required for complete protection, directly indicating a much *higher* protective power. Statement D is the standard accepted macroscopic visual indicator of irreversible gold sol coagulation.