UPSC Civil Services (Mains), Chemistry optional · 2022 · Paper I
Q7(d). Surface area of an adsorbent from the nitrogen monolayer
Question
At 0 °C and 1 atm pressure, the volume of nitrogen gas required to cover a sample of an adsorbent is found to be 130 cm³ g⁻¹. Calculate the surface area per gram of adsorbent. Given that area occupied by a nitrogen molecule is 0.162 nm². [NA = 6.022 × 10²³ mol⁻¹]
Answer in brief
Surface area = 566 m² g⁻¹.
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CoversBET surface areamonolayer adsorptionnitrogen adsorptionspecific surface areaadsorbent
All parts of Question 7
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- 7(d) Surface area of an adsorbent from the nitrogen monolayer10 marks
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