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Why is adsorption always exothermic ?...

Why is adsorption always exothermic ?

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Because of attraction between adsorbate and adsorbent,energy is released during adsorption.
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Adsorption is aways exothermic.

Why adsorption is exothermic ?

Adsorption is always

Statement: A catalyst always lower the energy of ectivation. Explanation: The catalyst-reactant interaction forms activated adsorbed complex and adsorption is always exothermic.

The correct statements pertaining to the adsorption of a gas on a solid surface are (i) Adsorption is always exothermic (ii) Physisorption may transform into chemisorption at high temperature (iii) Physisorption increases with increasing temperature but chemisorotion decrease with increasing temperature (iv) Chemisorption is more exothermic than physisoption, however, it is very slow due to higher energy of activation

Select the set having correct statements pertaining to the adsorption of a gas on a solid surface (1) physisortion may transform into chemisorption at high temperature (2) chemisorption is more exothermic than physisortion , however it is very slow due to higher energy of activation (3) Adsorption is always exothermic (4) Physiosorption increase with increasing temperature but chemisorption decreases with increasing temperature

Adsorption is always exothermic in nature , Do tor agree ?

Assertion :- The graphical representation of physical adsorption with temp is Reason :- This is weak adsorption & adsorption is exothermic process.

MODERN PUBLICATION-SURFACE CHEMISTRY-REVISION EXERCISE (VERY SHORT ANSWER QUESTIONS )
  1. Which of the two, adsorption or absorption, is surface phenomenon?

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  2. Given one example each of lyophobic sol and lyophilic so .

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  3. Give one example each of sol and gel.

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  4. Given one example eacg of 'oil water' and 'water oil' emulsion.

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  5. Out of BaCl(2) and KCl, which is more effective in causing coagulation...

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  6. Write one similarity between physisorption and chemisorption.

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  7. The enzymes which convert glucose into ethyl alcohol is

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  8. Define positive and negative catalysis.

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  9. The dispersed phase and dispersion medium in soap lather are respectiv...

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  10. What is differnece between an emulsion and a gel ?

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  11. Which will be adsorbed more readily on the surface of charcoal and why...

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  12. Of physisorption and chemisorption which type of adsorption has a high...

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  13. Give an example of 'shape-selective catalyst'.

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  14. What is the effect of temeperature on chemisorption?

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  15. Why is adsorption always exothermic ?

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  16. What are the dispersed phase and dispersion medium in milk

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  17. Write a method by which lyophobic colloids can be coagulated.

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  18. Write the main reason for the stability of colloidal sols.

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  19. What type of colloid is formed when a solid is dispersed in a liquid? ...

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  20. CO(g) and H(2)(g) react to give different products in the presence of ...

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