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Question: Answered & Verified by Expert
The protective power of a lyophilic colloidal sol is expressed in terms of
ChemistrySurface ChemistryAP EAMCETAP EAMCET 2021 (19 Aug Shift 2)
Options:
  • A

    Critical micelle concentration

  • B

    Standard reduction potential

  • C Gold number
  • D Oxidation number
Solution:
2052 Upvotes Verified Answer
The correct answer is: Gold number

The protective power of lyophilic colloidal sol is expressed in terms of gold number. Gold number is the number of milligrams of the protective colloid which prevent the coagulation of 10 ml of red gold sol. Smaller the gold number higher the protective power of a colloid.

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