Silica gel is utilised for the ________ of the number of gases.

adsorption

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absorption

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desorption

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all of the above

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Solution

The correct option is A adsorption
Silica gel is used as a desiccant as it removes the moisture as well as many other gases by adsorption onto its numerous pores.

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Q. At 1atm and 273K the volume of

N_{2}

gas required to cover a sample of silica gel assuming Langmuir monolayer adsorption, is found to be

1.30 c m^{3} / g

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. What is the surface area per gram of silica gel?

(

N_{A} = {6 \times 10}^{23}

)

At 1 atm and 273 K the volume of nitrogen gas required to
cover a sample of silica gel, assuming Langmuir monolayer adsorption, is found
to be $1.30 {c m}^{3} g^{- 1}$ of the gel. The area occupied by a nitrogen
molecule is $0.16 {n m}^{2}$ . What is the surface area per gram of silica gel?
$[G i v e n N_{A} = 6 X 10^{23}]$

Q. When we use silica gel as the stationery phase in TLC, which of these can be used as a mobile phase?

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Silica gel is utilised for the ________ of the number of gases.

The correct option is A adsorptionSilica gel is used as a desiccant as it removes the moisture as well as many other gases by adsorption onto its numerous pores.

The correct option is A adsorption
Silica gel is used as a desiccant as it removes the moisture as well as many other gases by adsorption onto its numerous pores.