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As per the Freundlich adsorption isotherm, which statement is accurate?

1. At low pressure, x/m = 1/KP^n with 1/n = 1, hence x/m is directly proportional to P.
2. At high pressure, x/m becomes constant and 1/n equals 0.
3. The parameter n takes values ranging from 0 to 1.
4. At a fixed temperature, x/m is a function of P.

Correct answer: The parameter n takes values ranging from 0 to 1.

Solution

According to Freundlich Adsorption Isotherm, the value of n lies between 0 and 1, which determines the extent of adsorption with respect to pressure. This is a key feature of the isotherm.

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