Question

What do x and m represent in the following expression?

`(x/m) = k P^(1//n)`

Answer 1

In the expression `(x/m) = k P^(1//n)`:

(x) represents the mass of the gas adsorbed.

(m) represents the mass of the adsorbent.

Thus, `(x/m)` is the amount of gas adsorbed per unit mass of the adsorbent. Here, (k) and (n) are constants, and (P) is the equilibrium pressure of the gas. This expression is known as Freundlich’s adsorption isotherm which relates the amount of gas adsorbed to its pressure at constant temperature.