Question

Gold number of a lyophilic sol is such property that:

• A. The larger its value, the greater is the peptising power
• B. The lower its value, the greater is the peptising power
• C. The lower its value, the greater is the protecting power
• D. The larger its value, the greater is the protecting power

Answer 1

Answer: (C)

The lower its value, the greater is the protecting power

Answer 2

Gold number $\propto \frac { 1 } { \text { Protecting power } }$ .