A graph between x/m and the pressure P of the gas at a constant temperature is called…
Chemistry · JEE Advanced · NTA Exams — Surface Chemistry
A graph between x/m and the pressure P of the gas at a constant temperature is called adsorption isotherm. Where x is the no. of moles of the adsorbate and m is the mass of the adsorbent. Adsorption isotherms of different shapes have been experimentally observed. According to Fruendlich adsorption isotherm.
x/m = kP1/n
where k and n are constant parameters depending upon the nature of the solid and gas.
Graph between \(\log \left(\frac{x}{m}\right)\) and log P is a straight line at angle 45o with intercept OA as shown.
Hence, \(\left(\frac{\mathrm{x}}{\mathrm{~m}}\right)\) at a pressure of 2 atm is:
- 2
- 4
- 8
- 1
Answer
(B) 4
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