The critical coagulation concentration (CCC) refers to:
The concentration of the colloid at which it starts coagulating
The concentration of the electrolyte required for coagulation
The concentration of the stabilizing agent required for stabilization
The concentration of the dispersed phase in the colloid
The critical coagulation concentration (CCC) is the minimum concentration of an electrolyte required to cause coagulation of a colloid.
Hence option 2 is correct.
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