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Which of the followig characteristics is...

Which of the followig characteristics is not correct for physical adsorption ?

A

Adsorption increases with increase in temperature

B

Adsorption is spontaneous

C

Both enthalpy and entropy of adsorption are negative

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
A
Adsorption decreases with increase in temperature since it is of exothemic nature.
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Adsorption is the tendency of accumulation of molecular species at the surface of solid or liquid. Depending upon the nature of bonds or forces of attraction between adsorbate and adsorbent. It is classofied between physisorption and chemisorption. Which of the following characteristics is not correct for physical adsorption?

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Knowledge Check

  • Which of the following characteristics is not correct for physical adsorption ?

    A
    Adsorption on solids is reversible
    B
    Adsorption increases with increases in temperature
    C
    Adsorption is spontaneous
    D
    Both enthalpy and entropy of adsorption are negative

  • Which one of the following characteristics is not correct for physical adsorption?

    A
    Adsorption increase with increase in temperature
    B
    Adsorption is spontaneous
    C
    Both enthalpy and entropy of adsorption are negative
    D
    Adsorption on solieds is reversible

  • Which one of the following characteristics is not correct for physical adsorption ?

    A
    Adsorption on solids is reversible
    B
    Adsorption increases with increase in temperature
    C
    Adsorption is spontaneous
    D
    Both enthalpy and entropy of adsorption are negative

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