MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Classification of Colloids - Based on nature of interaction

Gold sol is a...

Question

Gold sol is an example of:

A

Associated Colloid

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

Lyophillic Colloid

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

Multimolecular Colloid

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

D

Macromolecular Colloid

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C
Multimolecular Colloid

Multimolecular(particle size<1nm),they aggregate together and form colloid e.g. gold sol.

Suggest Corrections

thumbs-up

0

Similar questions

Explain what are multimolecular colloids, macromolecular colloids and associated colloids?

Give the difference between them.

Q. Define the following terms giving an example of each:
(i) Associated colloids (ii) Lyophilic sol (iii) Adsorption

Q. Lyophilic colloidal sols are much more stable than lyophobic colloidal sols. This is due to the extensive solvation of lyophilic colloidal sols, which form a protective layer outside it which prevents it from forming associated colloids. Lyophilic colloidal sols also protect lyophobic colloidal sols from precipitation by the action of electrolytes. This is due to the formation of a protective layer by the lyophilic sols outside lyophobic sols. Lyophilic sols are also called protective sols.
Gelatin (lyophilic) protects gold sol (lyophobic) from coagulation on the addition of a solution of sodium chloride. The protective powers of different colloidal sols are measured in terms of gold number.
Gold number is defined as the amount of protective sol in milligrams that prevents the coagulation of 10 mL of a given gold sol on adding 1 mL of a

10 %

solution of sodium chloride. Thus, the smaller the gold number of a lyophilic sol, the greater is the protective power.

[A g I] I^{-}

colloidal sol can be coagulated by the addition of a suitable cation. 1 mol

[A g I] I^{-}

A g N O_{3}, P b (N O_{3})_{2}

F e (N O_{3})_{3}

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Classification of Colloids

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Classification of Colloids - Based on nature of interaction

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon