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Negatively charged colloidal solution of...

Negatively charged colloidal solution of clay in water will need for precipitation, the minimum amount of

A

aluminium sulphate

B

potassium sulphate

C

sodium hydroxide

D

hydrochloric acid

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Which is used for ending charge on colloidal solution

The particles of colloidal solution possess electrical charge which is responsible for the stability of these solutions. The charge on colloidal particles arises because of selective adsorption of ions which are common with their own lattice. The presence of charge on colloidal part!cles can be determined with the help of phenomenon known as electrophoresis. However, when some electrolyte is added, the charge on the particles of dispersed phase gets neutralized and precipitation takes place. This process is also called coagulation. The coagulation is given by Hardy Schulze rules. According to these rules the ions carrying the charge opposite to that of sol particles are effective and coagulating power of an electrolyte is directly proportional to the fourth power of the valency of the ion. Coagulation can also occur by mutual precipitation, by electrophoresis, by persistent dialysis or by heating or cooling. Which charge is responsible for stability of colloidal particles ?

The particles of colloidal solution possess electrical charge which is responsible for the stability of these solutions. The charge on colloidal particles arises because of selective adsorption of ions which are common with their own lattice. The presence of charge on colloidal part!cles can be determined with the help of phenomenon known as electrophoresis. However, when some electrolyte is added, the charge on the particles of dispersed phase gets neutralized and precipitation takes place. This process is also called coagulation. The coagulation is given by Hardy Schulze rules. According to these rules the ions carrying the charge opposite to that of sol particles are effective and coagulating power of an electrolyte is directly proportional to the fourth power of the valency of the ion. Coagulation can also occur by mutual precipitation, by electrophoresis, by persistent dialysis or by heating or cooling. What is precipitation ?

Read the given passage and answers following questions : The particles of colloidal solution possess electrical charge which is responsible for the stability of these solutions. The charge on colloidal particles arises because of selective adsorption of ions which are common with their own lattice. The presence of charge on colloidal particles can be determined with the help of phenomenon known as electrophoresis. However, when some electrolyte is added, the charge on the particles of, dispersed phase gets neutralized and precipitation takes place. This process is also called coagulation. The coagulation is given by Hardy Schulze rules. According to these rules the ions carrying the charge opposite to that of sol particles are effective and coagulating power of an electrolyte is directly proportional to the fourth power of the valency of the ion. Coagulation can also occur by mutual precipitation , by electrophoresis, by persistent dialysis or by heating or cooling. Answer the following questions : What happens to the charge of particles when electrolyte is added ?

MODERN PUBLICATION-SURFACE CHEMISTRY-EXERCISE
  1. Which is correct about physical adsorption ?

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  2. During the adsorption of a gas on the surface of a solid which of the ...

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  3. Negatively charged colloidal solution of clay in water will need for p...

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  4. Identify the positively charged sol.

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  5. The stability of a lyophobic colloid is due to

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  6. The amount of electrolytes required to coagulate a given amount of AgI...

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  7. Gold sol can be prepared by

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  8. For Freundlich isotherm, a graph of log x/m is plotted against log P. ...

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  9. What is the composition of bronze metal alloy?

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  10. The electrolyte having maximum flocculation value for Ag//Ag^+ sol is

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  11. Which of the following curves is in accordance with Freundlich adsorpt...

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  12. Give appropriate answer for the following question- Which alloy is mad...

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  13. Point out the false statement.

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  14. Enzymatic reactions are given in Column I and enzymes in Column II ...

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  15. In which one of the following properties, physisorption and chemisorpt...

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  16. Give appropriate answer of the following question- Which alloy is made...

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  17. Name an alloy which is made up of Fe, Al, Ni, Co?

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  18. Give an appropriate answer of the following question- Which alloy is u...

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  19. Fill the blanks with appropriate answer- Fish plates in the railways t...

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  20. Fill in the blanks- is used for welding filling of cracked metallic b...

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