1.

Freundlich adsorption isotherm is given by the expression x/m=k p^(1/n). Which of the following conclusions can be drawn from this expression ?

Answer»

When `1/n=0,` the adsorption is independent of PRESSURE
When `1/n=0,` the adsorption is directly proporational to pressure
When `n=0,x/m` vs p graph is a line parallel to x-axis
When `n=0,` PLOT of `x/m` vs p is a curve

Solution :`x/m=kp^(1/n).` When `1/n=0,x/m=kp^(0)=k` (constant) i.e., it becomes independent of pressure. HENCE, (a) is CORRECT and (b) is wrong. When `n=0, x/m=k p^(oo).` Hence,` x/mvsp` cannot be linear parallel to x-axis but will be a curve. Hence, (c ) is wrong and (d) is correct.


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