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Why is adsorption always exothermic ?...

Why is adsorption always exothermic ?

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The correct Answer is:
New bond formation takes place
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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.

AAKASH INSTITUTE-SURFACE CHEMISTRY -TRY YOURSELF
  1. Why is adsorption always exothermic ?

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  2. What is the effect on entropy change (triangle S) in adsorption?

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  3. Which adsorption takes place at low temperature?

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  4. Low temperature is favourable for ……….. reactions.

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  5. Which type of gases are readily adsorbed by solids?

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  6. Write any two characteristics of Chemisorption.

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  7. Why does physisorption decrease with increase in temperature ?

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  8. What is the change in mass and composition of catalyst after the compl...

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  9. Write the name of scientist who suggested the term catalyst first?

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  10. Metals of how many groups of periodic table show macimum catalytic act...

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  11. Which catalyst is used to convert alcohol directly to petrol?

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  12. What are optimum temperature and pH for the enzymes to act best ?

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  13. Which enzyme converts milk into curd?

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  14. By which method precipitate is converted into colloids?

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  15. Give one example each of multimolecular and macro-molecular colloids.

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  16. Explain the cleansing action of soaps.

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  17. What is the dispersed phase and dispersion medium in gel?

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  18. Why true solutions do not exhivit tyndall effect?

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  19. Write the name of four methods to coagulate lyphobic colloids

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  20. What is most accepted reason for the presence of charge on colloids?

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