Which statements among the following are corr | vedclass

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(B) Statement $(i)$ is correct: The Freundlich adsorption isotherm $\frac{x}{m} = kP^{\frac{1}{n}}$ fails at high pressure because experimental result

Vedclass · Accepted Answer

$(i), (ii) \& (iii)$ only

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(B) Statement $(i)$ is correct: The Freundlich adsorption isotherm $\frac{x}{m} = kP^{\frac{1}{n}}$ fails at high pressure because experimental results show that adsorption becomes independent of pressure at high values,whereas the equation suggests it continues to depend on pressure.Statement $(ii)$ is correct: Adsorption is an exothermic process,so $\Delta H Statement $(iii)$ is correct: Physical adsorption is non-selective because it is caused by weak van der Waals forces,which can occur between any adsorbate and adsorbent.Statement $(iv)$ is incorrect: Physical adsorption is reversible,while chemical adsorption is irreversible.Therefore,statements $(i), (ii),$ and $(iii)$ are correct.

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