What is an adsorption isotherm and isobar? from Chemistry Surface
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    Surface Chemistry

    Multiple Choice QuestionsShort Answer Type

    11. What is desorption?
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    12. Define physical and chemical adsorption.
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    13. Is adsorption exothermic or endothermic?
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    14. What is an adsorption isotherm and isobar?

    Answer:

    The variation in the amount of gas adsorbed by the adsorbent with pressure at constant temperature can be expressed by means of a curve termed as adsorption isotherm.

    A plot of the amount of gas adsorbed x / m against the pressure at constant temperature is called an adsorption isotherm.


    A plot of the amount adsorbed x / m versus temperature at constant pressure is called an adsorption isobar.
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    15. What are the physical states of dispersed phase and dispersion medium of froth?
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    16. Name a few common adsorbents.
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    17. What property must a good adsorbent have?
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    18. Why colloids are regarded as very good adsorbents?
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    19. What do you mean by sorption?
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    20. How do the surface molecules have the tendency of adsorption?
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