For adsorption obeying $x/m=k{p}^{1/n}$ with $n=3$, the pressure is increased eight-fold at constant temperature. The amount adsorbed per gram changes by a factor of:

More questions on Adsorption: physisorption vs chemisorption, Freundlich and Langmuir isotherms

• For the Freundlich isotherm, a plot of log(x/m) against log p is a straight line whose slope is: NEET level
• In the Langmuir isotherm theta=(Kp)/(1+Kp), the order of adsorption with respect to gas pressure at very low and at very high pressure is, r... JEE Main level
• Critical temperatures (in K) are: H2 33, N2 126, CO2 304, NH3 405. Assuming only physisorption on charcoal at the same temperature and press... JEE Main level
• A gas obeys the Langmuir isotherm with K=0.040 kPa^-1. The pressure at which half the surface sites are occupied is: JEE Main level
• A gas obeys theta=Kp/(1+Kp) with K=0.50 atm^-1. The fractional surface coverage at p=8.0 atm is: JEE Main level
• For a Langmuir adsorption, the pressure needed to reach 90% coverage is how many times the pressure needed to reach 50% coverage at the same... JEE Main level