1.

At STP the volume of nitrogen gas required to cover a sample of silica gel, assuming Langmuir monolayer adsorption, is found to be 1.33cm^3 g^(-1) of the gel. The area occupied by a nitrogen molecule is 0.14nm^2? What is the surface area per gram of silica gel (in m^2) ?

Answer»


Solution :`22400 rarr6 XX 10^(23)`
`1.33 RARR ? ""3.5 xx 10^(-18)` molecules
one molecule AREA `- 0.14 xx 10^(-18)`
` 3.5 xx 10^(19)` molecule `rarr ? "" 5`


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