(B) According to the Freundlich adsorption isotherm,$\frac{x}{m} = k \cdot p^{1/n}$.Taking $\log$ on both sides,we get $\log (\frac{x}{m}) = \log k +

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(B) According to the Freundlich adsorption isotherm,$\frac{x}{m} = k \cdot p^{1/n}$.Taking $\log$ on both sides,we get $\log (\frac{x}{m}) = \log k + \frac{1}{n} \log p$.Comparing this with the equation of a straight line $y = mx + c$,the slope is $\frac{1}{n} = \tan 45^\circ = 1$,so $n = 1$.The intercept is $\log k = 0.3010$. Since $\log 2 = 0.3010$,we have $k = 2$.Substituting these values at $p = 0.5 \ atm$,we get $\frac{x}{m} = 2 \times (0.5)^1 = 1.0 \ g$.

Class 12 Chemistry Surface Chemistry Adsorption and Adsorption isotherm

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In an adsorption experiment,a graph between $\log (x/m)$ versus $\log P$ was found to be linear with a slope of $45^\circ$. The intercept on $\log (x/m)$ axis was found to be $0.3010$. The amount of gas adsorbed per gram of charcoal under a pressure of $0.5 \ atm$ is (in $g$)

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A
$0.5$
B
$1.0$
C
$1.5$
D
$0.75$

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Class 12

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Surface Chemistry

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Adsorption and Adsorption isotherm

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In an adsorption experiment,a graph between $\log (x/m)$ versus $\log P$ was found to be linear with a slope of $45^\circ$. The intercept on $\log (x/m)$ axis was found to be $0.3010$. The amount of gas adsorbed per gram of charcoal under a pressure of $0.5 \ atm$ is (in $g$)

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The curve that best describes the adsorption of a gas $(x \, g)$ on $1.0 \, g$ of a solid substrate as a function of pressure $(p)$ at a fixed temperature is

Assertion $(A)$: Finely divided charcoal can act as an adsorbent.Reason $(R)$: Finely divided material has a small surface area.

Give the differences between physical adsorption and chemical adsorption.

$A$ mixture of substances $A, B, C, D$ is subjected to column chromatography. The degree of adsorption is in the order of $D > B > C > A$. The column is eluted with a suitable solvent. Identify the correct statement with respect to the separation of the mixture.

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Assertion $(A)$: Finely divided charcoal can act as an adsorbent.
Reason $(R)$: Finely divided material has a small surface area.