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The adsorption of gases on the surface o...

The adsorption of gases on the surface of metals is called ……….

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The adsorption of gases on the surface of metals is called **physisorption** or **chemisorption**, depending on the nature of the interaction between the gas molecules and the metal surface. 1. **Understanding Adsorption**: Adsorption refers to the process where molecules from a gas or liquid phase adhere to the surface of a solid or liquid. This is different from absorption, where a substance is taken up into the bulk of another substance. 2. **Types of Adsorption**: - **Physisorption**: This is a physical adsorption process where weak van der Waals forces are involved. It is generally reversible and occurs at low temperatures. - **Chemisorption**: This is a chemical adsorption process where a strong chemical bond is formed between the adsorbate (gas) and the adsorbent (metal surface). It is usually irreversible and occurs at higher temperatures. ...
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What is the phenomenon of adsorption in which hydrogen on the surface of a metal called?

The adsorption of a gas at a metal surface is called occlusion. The extent of gas adsorbed at metal surface at a certain temperature depends on pressure as (x)/(m)=K.P^(1//n) where K and n are constant for a particular combination of gas and metal at fixed temperature and (x)/(m) is the mass of gas adsorbed per unit mass of metal .For H_(2) gas adsorbing at Pt-surface, the following graph is obtained. The mass of H_(2) gas adsorbed on the surface of 10 gm Pt at 16 atm is :

Knowledge Check

  • The accumulation of gases on surface of solids is called as

    A
    Absorbtion
    B
    Adsorption
    C
    Occlusion
    D
    None

  • The physical adsorption of gases on the solid surface is due to :

    A
    van der Waal's forces
    B
    covalent bonding
    C
    hydrogen bonding
    D
    all of these

  • During adsorption of a gas on the surface of a solid which of the following is true

    A
    `DeltaG lt 0, DeltaS gt 0, DeltaH lt0`
    B
    `Delta G gt 0,Delta H lt 0, Delta S lt 0`
    C
    `Delta G lt 0, Delta H lt 0, Delta S lt 0`
    D
    `Delta G lt 0, Delta H lt 0, Delta S gt 0`

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    The adsorption of a gas at a metal surface is called occlusion. The extent of gas adsorbed at metal surface at a certain temperature depends on pressure as (x)/(m)=K.P^(1//n) where K and n are constant for a particular combination of gas and metal at fixed temperature and (x)/(m) is the mass of gas adsorbed per unit mass of metal .For H_(2) gas adsorbing at Pt-surface, the following graph is obtained. The correct values of K and n are respectively.

    The minimum energy required to eject electrons from the surface of a metal is called.....or.......

    Adsorption of gases on solid surface is exhothermic since

    The following statement relate to the adsorption of gases on a solid surface. Identify the incorrect statement among them :

    The following statements relate to the adsorption of gases on a solid surface. Identify the incorrect statement among them:

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