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Why is pyophobis sol easily congulated a...

Why is pyophobis sol easily congulated as compared to lyophilic sol ?

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In lyophobic sol, there is hardly any affinity between the particles of dispersion medium and dispersed phase. Therefore, it is unstable and can be easily congulated. Since there is a strong affinity in these in case of lyophilic sol, is coagulation is rather difficult.
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Read the given passage and answer the question that follow: Colloidal particles always carry an electric charge which may be either positive or negative. For example, when AgNO_3 solution is added to KI solution, a negatively charged colloidal sol is obtained. The presence of equal and similar charges on colloidal particles provide stability to the colloidal sol and if, somehow, charge is removed. coagulation of sol occurs. Lyophobic sols are readily coagulated as compared to lyophilic sols. Why a negatively charged sol is obtained on adding AgNO_3 solution to Kl solution?

Read the given passage and answer the question that follow: Colloidal particles always carry an electric charge which may be either positive or negative. For example, when AgNO_3 solution is added to KI solution, a negatively charged colloidal sol is obtained. The presence of equal and similar charges on colloidal particles provide stability to the colloidal sol and if, somehow, charge is removed. coagulation of sol occurs. Lyophobic sols are readily coagulated as compared to lyophilic sols. Why a negatively charged sol is obtained on adding AgNO_3 solution to Kl solution?

Lyophilic sol are

Lyophilic sols are

Surface of lyophilic sols is

Lyophilic sols are :

DINESH PUBLICATION-SURFACE CHEMISTRY -QUESTION FROM BOARD EXAMINATIONS
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  3. Why is pyophobis sol easily congulated as compared to lyophilic sol ?

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