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What is meant by coagulation of a colloi...

What is meant by coagulation of a colloidal solution? Name any method by which coagulation of lyophobic sols can be carried out.

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It is a proces of aggregating together the coll oidal particles so as to change them into large sized particles. Coagulahon of lyophobic sols is carried out by adding suitable electrolytes.
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Name a process by which coagulation of lyophobic sol can be carried out.

The coagulation of the lyophobic sols can be carried out by

What is ment by coagulation of colloidal solution ? Describe briefly and three methods by which coagulation of lyophobic sols can be carried out.

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. Name one method by which coagulation of lyophobic sol can be carried out.

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. Name one method by which coagulation of lyophobic sol can be carried out.

Coagulation of colloids can be achieved by :

Write a method by which lyophobic colloids can be coagulated.

XII BOARDS PREVIOUS YEAR-XII BOARDS-CHEMISTRY (Theory) [SET - I]
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  2. Describe the following : (i) Tyndall effect (ii) Shape-selective c...

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  3. What is meant by coagulation of a colloidal solution? Name any method ...

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  4. Complete the following reactions (i) C(2)H(5)OC(2)H(5)+HCl to (ii...

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  5. Draw the structural formulae of the following compounds : (i) H(4)P(...

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  6. Give the chemical tests to distinguish between the following pairs of ...

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  7. Identify A and B in each of the following processes : (i) CH(3)CH(2...

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  8. Draw the structures of the monomers of the following polymers: (i) Po...

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  9. The density of copper metal is 8.95" g "cm^(-3). If the redius of copp...

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  10. What mass of NaCl ("molar mass" =58.5g mol^(-1)) be dissolved in 65g o...

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  11. Describe the role of the following : (i) NaCl in the extraction of ...

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  12. Describe the principle involved in each of the following processes of ...

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  13. Why is europium (II) more stable than cerium (II) ?

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  14. Explain the mechanism of S(N^(1)) and S(N^(2)) reactions with examples...

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  15. How would you convert the following : (i)Phenol to benzoquinone (i...

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  16. Explain the following : (a) The electron gain enthalpy with negative...

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  17. Anino acids may be acidic, alkaline or neutral, How does this happen? ...

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  18. Explain the following terms with one example in each case : (i) Foo...

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  19. (a) Explain the following terms : (i) Rate of a reaction (ii) Act...

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  20. (a) Explain the following terms : (i) Order of a reaction (ii) Mol...

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