Question

ᴇxᴘʟᴀɪɴ ғʀᴇᴜɴᴅʟɪᴄʜ ᴀᴅsᴏʀᴘᴛɪᴏɴ ɪsᴏᴛʜᴇʀᴍ.​

Answer 1

Freundlich Adsorption Isotherm

Freundlich adsorption gives the variation in the quantity of gas adsorbed by a unit mass of solid adsorbent with the change in pressure of the system for a given temperature. The expression for the Freundlich isotherm can be represented by the following equation:

                                                                  5where n>1

Where x is the mass of the gas adsorbed, m is the mass of the adsorbent, P is the pressure and n is a constant which depends upon the nature of adsorbent and the gas at a given temperature. Taking the logarithm on both the sides of the equation, we get,

6

The plot of this equation is a straight line as represented by the following curve.

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Answer 2

Answer:

$\huge{\underline{\mathtt{\red{A}\pink{n} \green{s}\blue{w}\purple{e}\orange{r}}}}$

Freundlich isotherm explains the behaviour of adsorption accurately. In the equation – x/m = k.P1/n (n > 1), 'k' and 'n' are constants that depend on the nature of the adsorbent and the gas at a particular temperature.