Surface Chemistry II

The rate of adsorption is determined by observing the change of fractional coverage θ with------

• time, t

• pressure

• temperature

• surface area

θ is the ratio of the number of adsorption sites ----------- to the number of adsorption sites ---------------

• available, occupied

• occupied, available

• present, available

• present, empty

It has been observed that ---------- gases are more adsorbed than ----------- gas.

• permanent gas, easily liquifiable gas

• temporary gas, permanent gas

• easily liquefiable gas, permanent gas

• permanent gas, temporary gas

If the surface area per unit mass of the ------------- is greater, then greater is its -------------- capacity.

• adsorbate, adsorbent

• solid, storage

• adsorbate, surface area

• adsorbent, adsorption

The extent of adsorption i.e. (x/m), where x is the mass of the adsorbate and m is the mass of the adsorbent, depends on the ------------------.

• pressure

• temperature

• volume

• area

An adsorption isotherm is a graph plotted between magnitude of ----------- and -----------------.

• pressure and temperature

• temperature, surface area

• adsorption, pressure

• absorption and adsorption

In Freundlich adsorption isotherm, at saturation pressure, the rate of adsorption becomes equal to the rate of -------------.

• absorption

• sorption

• desorption

• activation