Q20 / 180 · KCET 2015 · Chemistry
Which of the following curve is in accordance with Freundlich adsorption isotherm?
- A
- B
- Correct answerC
- D
Solution
The relationship between the amount adsorbed \( \left(\frac{x}{m}\right) \) andthe equilibrium pressure \( (p) \) is given as:
\[ \frac{x}{m}=k p^{\frac{1}{n}} \rightarrow(1) \]
Taking log of Eq. (1) on both sides, we get
\[ \log \frac{x}{m}=\log k+\frac{1}{n} \log p \rightarrow(2) \]
By plotting \( \log (x / m) \) against \( \log p \), we get straight line with slope \( (1 / n) \) and intercept is log k. Hence, the curve will be
\[ \frac{x}{m}=k p^{\frac{1}{n}} \rightarrow(1) \]
Taking log of Eq. (1) on both sides, we get
\[ \log \frac{x}{m}=\log k+\frac{1}{n} \log p \rightarrow(2) \]
By plotting \( \log (x / m) \) against \( \log p \), we get straight line with slope \( (1 / n) \) and intercept is log k. Hence, the curve will be
Hence, the correct answer is option: 'C'.