Gold number of three substance a, b, c are 0.05,0.8,0.3.substance with maximum protective power is?
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Gold number is the measure of protective power of protective colloids which are lyophilic colloids and used to stabilise lyophobic colloids. Gold number is defined as the minimum mass in milligram of a protective colloid that must be added to 10 ml of red gold sol to prevent its coagulation (change to blue colour) when 1 ml of 10% NaCl is added to it. Smaller the gold number of a protective colloid, greater is its protective power. Therefore, the correct order of their protective power is :D< A< C < BHence, correct option is (2)
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Answer:
The substance (a) 0.05 has maximum protective power
Explanation:
Minimum the gold number, Maximum will be the protecting power and vice versa.
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