Fruendlich Isotherm
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Q. The equation for Freundlich adsorption isotherm is
a) xm=kp1n
b) (ln x)=ln(mk)+1nln p
c) xm=kp−n
d) Only a and b
a) xm=kp1n
b) (ln x)=ln(mk)+1nln p
c) xm=kp−n
d) Only a and b
- a
- b
- c
- d
Q. Plot of log (x/m) against log P is a straight line inclined at an angle of 45∘. When the pressure is 0.5 atm and the proportionality constant in Freundlich's equation is 10, the amount of solute per gram of adsorbent will be:
- 1 g
- 2 g
- 3 g
- 5 g
Q. In the adsorption of a gas on solid, Freundlich isotherm is obeyed. Thus, if the slope of the plot is zero, then the extent of adsorption is:
- directly proportional to the pressure of gas
- inversely proportional to the pressure of the gas
- independent of the pressure of the gas
- proportional to the square of the pressure of the gas
Q. Adsorption of a gas follows the Freundlich adsorption isotherm. In the given plot, 'x' is the mass of the gas adsorbed on mass m of the adsorbent at a pressure P.
xm is proportional to:
xm is proportional to:
- P14
- P2
- P
- P12
Q. In an adsorption experiment, a graph between logxm versus logP was found to be linear with a slope of 45o. The intercept of the log(x/m) axis was found to be 0.3010. Calculate the amount of gas adsorbed per gram of charcoal under a pressure of 0.5 atm
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- 2
- 3
- 4
Q. In an adsorption experiment, a graph between logxm versus logP was found to be linear with a slope of 45o. The intercept of the log(x/m) axis was found to be 0.3010. Calculate the amount of gas adsorbed per gram of charcoal under a pressure of 0.5 atm
- 1
- 2
- 3
- 4
Q.
For adsorption of gas on solid surface, the plots of log xm vs log P is linear with a slope equal to-
K
log K
Log C
1n (n being integer)
Q. In Fruendlich Isotherm, the value of 1n is
- 1 in case of physisorption
- 1 in case of chemisorption
- 0 to 1 in all cases
- Greater than 1 in all cases