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What is an electrophoresis ? Explain....

What is an electrophoresis ? Explain.

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The movement of colloidal particles under an applied electric potential is called electrophoresis.

The existance of charges on colloidal particles is confirmed by electrophoresis experiment.
When electric potential is applied across 2 platinum electrodes dipping in a colloidal solution, the colloidal particles move either to cathode or to an anode depending upon charge carried by the colloids.
Positively charged particles move towards the cathode and negatively charged particles move towards the anode.
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SUBHASH PUBLICATION-SURFACE CHEMISTRY-Questions
  1. What is Brownian movement ? What is the cause for it ?

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  2. What is zeta potential ?

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  3. What is an electrophoresis ? Explain.

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  4. What is coagulation or precipitation of colloids?

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  5. Mention the role of alum in the purification of drinking water ?

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  6. Name two methods by which a lyophillic sol can be coagulated.

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  7. Name the phenomenon/effect for the following. Colloidal particles ar...

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  8. Name the phenomenon/effect for the following. When electric potentia...

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  9. Name the phenomenon/effect for the following. Scattering of light b...

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  10. Give reason for the following. Brownian movement of colloidal partic...

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  11. Give reason for the following. Stability of colloids.

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  12. Give reason for the following. Brownian movement of colloidal partic...

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  13. As2S3 sol is negatively charged. Between sodium nitrate and aluminium ...

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  14. State hardy - Schulze rule.

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  15. What is tyndall effect?

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  16. In the coagulation of negative sol, arrange the following ions in the ...

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  17. For positive sol arrange the coagulation power of the following active...

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  18. What is oil dispersed in water (o/w) type emulsion ? Give example.

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  19. What is water dispersed in oil (w/o) type emulsion ? Give example.

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  20. What are emulsions? Give an example of oil dispersed in water (o/w) ty...

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