Langmuir Isotherm

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Q. gram eqiuivalent volume of O2 at st

Q. For adsorption of gas on a solid, the plot of log x/m vs log P is linear with slope equal to: (n being whole number)

Q. For a reversible physisorption process,
At pressure of $1atm$, fraction of surface covered is 0.3 i.e. $(\Theta =0.3)$.
If $K=\frac{k_a}{k_d}$, then calculate the value of $K$

1. $1.22$
2. $0.43$
3. $0.02$
4. $0.3$

Q. The Freundlich adsorption isotherm, a plot of $\log \left(x/m\right)\text{(along y-axis )}\text{and}\log P\text{(along x -axis )}$ gives a straight line. The intercept and slope for the line is $0.4771\text{and}2$ respectively. The mass of gas adsorbed per gram of adsorbent is $x\times {10}^{-4}\text{g}$. If the initial pressure is $0.04\text{atm}$. The value of $x$ is. $(\log 3=0.4771)$.

Q. At high pressures, Langmuir adsorption isotherm takes the form:

1. $\frac{x}{m}=\frac{\mathrm{ap}}{1+\mathrm{bp}}$
   
2. $\frac{x}{m}=\mathrm{ap}$
   
3. $\frac{m}{x}=\frac{b}{a}+\frac{1}{\mathrm{ap}}$
   
4. $\frac{x}{m}=\frac{a}{b}$