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What is the reason for the stability of ...

What is the reason for the stability of colloidal sols?

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Stability of colloidal sols is due to the fact that the colloidal particles in the sol are electrically charged. Hence, repel one another and do not come close together to form large non-colloidal particles.
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Write the main reason for the stability of colloidal sols.

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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. What is the reason for the charge on sol particles ?

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. What is the reason for the charge on sol particles ?

XII BOARDS PREVIOUS YEAR-XII BOARDS-CHEMISTRY (THEORY)
  1. Give an example each of a molecular solid and an ionic solid.

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  2. Write the IUPAC name of the given compound :

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  3. What is the reason for the stability of colloidal sols?

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  4. (i) Gas A is more soluble in water than Gas (B) at the same temperatur...

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  5. Write the structure of the following : (i) BrF(3) ...

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  6. What happens when : (i) SO(2) gas is passed through an aqueous solut...

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  7. When a coordination compound CoCI(3).6NH(3) " is mixed with " AgNO(3)...

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  8. For a reaction : H(2) + CI(2) overset(hv)(to)2HCI Rate = k (i) Wr...

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  9. Write the chemical equations involved in the following reactions: (...

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  10. An element crystallizes in b.c.c. lattice with cell edge of 500 pm. Th...

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  11. For the first order thermal decomposition reaction, the following data...

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  12. Define the following terms : (i) Lyophilic coloid (ii) Zeta poten...

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  13. (i) Name the method of refining of nickel (ii) What is the role of c...

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  14. Calculate the boiling point of solution when 4g of Mg SO(4) (M=120g "m...

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  15. Give reasons : (i) SO(2) is reducing while TeO(2) is an oxidizing agen...

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  16. Write the final product(s) in each of the following reactions : (a)...

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  17. Account for the following (i)Primary amines (R-NH(2)) have higher b...

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  18. How do you convert: 1. Chlorobenzene to biphenyl (ii). Propene to ...

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  19. Write the major product(s) in the following : (i) (ii) 2CH(3)-...

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  20. (i) Whate is the role of Sulphur in the vulcanization of rubber ? (...

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