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Ferric hydroxide sol can be prepared fro...

Ferric hydroxide sol can be prepared from freshly prepared ferric hydroxide precipitate. It can also be prepared by adding ferric chloride solution to boiling water. In both cases the sol particles are positively charged. What happenswhen an electric pot ential is applied across two platinum electrodes dipping in" ferric hydroxide sol? Explain.

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What happens when an electric is applied across two platimum electrodes dipping in ferric hydroxide sol? Explain.

Ferric hydroxide sol can be prepared from freshly perpared ferric hydroxide precipitate. It can also be prepared by adding ferric chloride solution to boilling water. In both cases the sol particles are positively charged. Name the above two methods of preparation of ferric hydroxide sol.

Colloids are an intermediate between suspension and solutions. Suggest suitable method for the preparation of the following sol:Ferric hydroxide sol

Explain what is observed. An electrolyte, NaCI is added to hydrated ferric hydroxide sol.

In an attempt to prepare ferric hydroxide sol by adding small amount of ferric chloride to water, one person got a precipitate of ferric hydroxide. How can you help him to convert Fe(OH)_3 precipitate to Fe(OH)_3 sol?

In the lab three students were asked to prepare a colloidal solution. Student A .: Added starch powder into hot water. Student B : Added a small amount of ferric chlorideInto freshlyprepared ferric hydroxide. Student C : Added soap In to water.Name the process adopted by student B.

In the lab three students were asked to prepare a colloidal solution. Student A .: Added starch powder into hot water. Student B : Added a small amount of ferric chlorideInto freshly prepared ferric hydroxide. Student C : Added soap In to water.Which type of colloid was prepared by student A, lyophoblc sol or lyophillcsol ?

In the lab three students were asked to prepare a colloidal solution. Student A .: Added starch powder into hot water. Student B : Added a small amount of ferric chlorideInto freshlyprepared ferric hydroxide. Student C : Added soap In to water. Identify amacromolecular colloid and an associated colloid from the three colloids prepared.

BODY BOOKS PUBLICATION-SURFACE CHEMISTRY-Example
  1. There are mainly two types of adsorption of gases on solids.Write any ...

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  2. Ferric hydroxide sol can be prepared from freshly perpared ferric hydr...

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  3. Ferric hydroxide sol can be prepared from freshly prepared ferric hydr...

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  4. Comment on the statement that "colloid is not a substance but a state ...

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  5. Action of soap is due to emulsification and micelle formation. Commen...

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  6. Distinguish between the meaning of the terms adsorption and absorption...

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  7. Give reason why a finely divided substance is more effective as an ads...

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  8. what are enzymes? Write in brief the mechanism of enzyme catalysis.

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  9. How are colloids classified on the basis of physical states of compone...

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  10. How are colloids classified on the basis of nature of dispersed phase...

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  11. How are colloids classified on the basis of interaction between dispe...

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  12. How do emulslfires stabilise emulsion?Name two emulsifiers.

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  13. Bredig’s arc method is used to prepare which of the following sol ?

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  14. The existence of charge on colloidal particles is confirmed by electro...

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  15. The existence of charge on colloidal particles is confirmed by electro...

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  16. Briefly explain the dlfferents types of emulsions and give example for...

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  17. Explain the terms, Zeta potential, electrophoresis and electro-osmosis...

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  18. State Hardy-Schulzerule with the help of example.

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  19. Why lyophilic colloids are used as protective colloids?

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  20. There are mainly ,two types of adsorption. They are physlsorption and ...

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