Question

In Fruendlich Isotherm, the value of $\frac{1}{n}$ is

• A. 1 in case of physisorption
• B. 1 in case of chemisorption
• C. 0 to 1 in all cases
• D. Greater than 1 in all cases

Answer 1

The correct option is C 0 to 1 in all cases

From the video we know that the value of $\frac{1}{n}$ lies between 0 and 1 in all cases.
This is because Fruendlich isotherm is a straight line at low pressures when we get $P^{\frac{1}{n}}$ to be $P^1$ which gives us the straight line and at high pressures we get $P^{\frac{1}{n}}$ to be $P^0$ which gives us an expression independent of pressure as you have seen in the graph