Q69 / 180 · NEET 2019 (Odisha) · Chemistry
The correct option representing a Freundlich adsorption isotherm is
- Correct answerA$\frac{x}{m}=k p^{0.3}$
- B$\frac{x}{m}=k p^{2.5}$
- C$\frac{x}{m}=k p^{-0.5}$
- D$\frac{x}{m}=k p^{-1}$
Solution
According to Freundlich adsorption isotherm,
$$
\frac{\mathrm{x}}{\mathrm{m}}=\mathrm{kp}^{1 / \mathrm{n}}
$$
where, $\frac{\mathrm{x}}{\mathrm{m}}=$ amount of the gas adsorbed per unit mass of adsorbent $\mathrm{p}=$ pressure $\mathrm{k}$ and $\mathrm{n}=$ constants.
The value of $\mathrm{n}$ lies in between 0 to 1 .
Thus, $\frac{\mathrm{x}}{\mathrm{m}}=\mathrm{kp}^{0.3}$ and option (1) is correct.
Hence, the correct answer is option: 'A'.