(B) Initial moles of acetic acid: $(n_{CH_3COOH})_{\text{initial}} = 500 \ mL \times 0.5 \ M = 250 \ mmol = 0.25 \ mol$.Final moles of acetic acid: $(

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$6 \times 10^{22} \text{ molecules}$

(B) Initial moles of acetic acid: $(n_{CH_3COOH})_{\text{initial}} = 500 \ mL \times 0.5 \ M = 250 \ mmol = 0.25 \ mol$.Final moles of acetic acid: $(n_{CH_3COOH})_{\text{final}} = 500 \ mL \times 0.3 \ M = 150 \ mmol = 0.15 \ mol$.Moles adsorbed on charcoal: $\Delta n = 0.25 \ mol - 0.15 \ mol = 0.1 \ mol$.Number of molecules adsorbed: $N = \Delta n \times N_A = 0.1 \times 6 \times 10^{23} = 6 \times 10^{22} \text{ molecules}$.

Class 12 Chemistry Surface Chemistry Adsorption and Adsorption isotherm

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Charcoal is mixed in $500 \ mL$ of $0.5 \ M$ acetic acid solution. After some time,the concentration of the solution becomes $0.3 \ M$. Find the total number of molecules adsorbed on the surface of the charcoal.

A
$6 \times 10^{23} \text{ molecules}$
B
$6 \times 10^{22} \text{ molecules}$
C
$6 \times 10^{24} \text{ molecules}$
D
$6 \times 10^{21} \text{ molecules}$

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Surface Chemistry

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Adsorption and Adsorption isotherm

The plot of $\log(\frac{x}{m})$ against $\log P$ is a straight line inclined at an angle of $45^{\circ}$. When the pressure is $0.5 \ atm$ and the Freundlich parameter $(K)$ is $10$,the amount of solute adsorbed per gram of adsorbent will be $(\log 5 = 0.699)$ .......... $g$.

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The equation which represents the Freundlich adsorption isotherm is ($x = \text{amount of gas}$, $m = \text{mass of solid}$):

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Which one of the following statements is not correct?

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Assertion : In chemisorption,adsorption first increases with temperature and then decreases.
Reason : Heat keeps on providing more and more activation energy.

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What is the value of the intercept on the $y$-axis when $\log \frac{x}{m}$ is plotted against $\log P$ in the Freundlich isotherm?

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Charcoal is mixed in $500 \ mL$ of $0.5 \ M$ acetic acid solution. After some time,the concentration of the solution becomes $0.3 \ M$. Find the total number of molecules adsorbed on the surface of the charcoal.

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The plot of $\log(\frac{x}{m})$ against $\log P$ is a straight line inclined at an angle of $45^{\circ}$. When the pressure is $0.5 \ atm$ and the Freundlich parameter $(K)$ is $10$,the amount of solute adsorbed per gram of adsorbent will be $(\log 5 = 0.699)$ .......... $g$.

The equation which represents the Freundlich adsorption isotherm is ($x = \text{amount of gas}$, $m = \text{mass of solid}$):

Which one of the following statements is not correct?

Assertion : In chemisorption,adsorption first increases with temperature and then decreases.Reason : Heat keeps on providing more and more activation energy.

What is the value of the intercept on the $y$-axis when $\log \frac{x}{m}$ is plotted against $\log P$ in the Freundlich isotherm?

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Assertion : In chemisorption,adsorption first increases with temperature and then decreases.
Reason : Heat keeps on providing more and more activation energy.