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Adsorption is accompanied by :...

Adsorption is accompanied by :

A

decrease in enthalpy and increase in entropy

B

increase in enthalpy and increase in entropy

C

decrease in enthalpy and decrease in entropy

D

increase in enthalpy and decrease in entropy

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In the following question, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as. Assertion (A): At the equilibrium position in the process of adsorption AH = TAS. Reason (R): Adsorption is accompanied by decrease in surface energy.

In the following question, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as. Assertion (A): At the equilibrium position in the process of adsorption AH = TAS. Reason (R): Adsorption is accompanied by decrease in surface energy.

Assertion: Adsorption is exothermic and spontaneous in spite of the fact that adsorption is accompanied with deccrease in entropy. Reason: The factor TDeltaS is lesser than DeltaH

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MODERN PUBLICATION-SURFACE CHEMISTRY-COMPETITION FILE (OBJECTIVE TYPE QUESTIONS) (A. MULTIPLE CHOICE QUESTIONS WITH ONLY ONE CORRECT ANSWER)
  1. Which of the following characteristics is not correct for physical ads...

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  2. The volume of gases NH(3), CO(2) and CH(4) adsorbed by one gram of cha...

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  3. Adsorption is accompanied by :

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  4. The enthalpy of physical adsorption is about

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  5. The colloidal system in which the disperse phase and dispersion medium...

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  6. Freshly prepared precipitates can be easily dispersed by shaking it wi...

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  7. The presence of electric charge on colloidal particles is indicated by...

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  8. The process of separation of colloids by passing through semi permeabl...

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  9. Size of colloidal particles is

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  10. An example of micelle is:

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  11. Effective electrolyte to cause the flocculation of a negatively charge...

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  12. Colloidal particles exhibit Tyndall effect due to

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  13. Which of the following is most effective in causing the coagulation of...

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  14. Soaps essentially form a colloidal solution in water and remove the gr...

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  15. Which of the following is an example of associated colloid ?

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  16. Which type of property is the Brownian movement of colloidal sol?

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  17. When KI is added to silver nitrate solution, the sol formed may be wri...

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  18. Out of the following, which reaction gives rise to a colloidal sol:

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  19. Blue colour of water in sea is due to

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  20. Alum helps in purifying water by

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