Question

Which statements are correct about colloidal solution?

• A. $\text{Coagulating value}\propto \frac{1}{\text{Coagulating power}}$
• B. $\text{Coagulating value}$ $\propto$ $\text{Charge on effective ion}$
• C. $\text{Gold number}$ $\propto \frac{1}{\text{Protective power}}$
• D. $\text{Scattering}$ $\propto \frac{1}{{\lambda }^4}$

Answer 1

Answer: (A), (C), (D)

The correct options are
A $\text{Coagulating value}\propto \frac{1}{\text{Coagulating power}}$
C $\text{Gold number}$ $\propto \frac{1}{\text{Protective power}}$
D $\text{Scattering}$ $\propto \frac{1}{{\lambda }^4}$

For colloidal solution,

$\text{Coagulating value}$ $\alpha \frac{1}{\text{Coagulating power}}$

Higher is the coagulating power, lower will be the coagulating value.

$\text{Gold number}$ $\alpha \frac{1}{\text{Protective power}}$

Higher is the protecting power, lower will be the gold number.

$\text{Scattering}$ $\alpha \frac{1}{{\lambda }^4}$