To verify the Freundlich adsorption isotherm for a given gas-solid system, a graph of is plotted on the y-axis against on the x-axis. If the experimental plot yields a straight line with a slope stric

Question

To verify the Freundlich adsorption isotherm for a given gas-solid system, a graph of $\log(x/m)$ is plotted on the y-axis against $\log p$ on the x-axis. If the experimental plot yields a straight line with a slope strictly equal to zero, what can be conclusively deduced about the state of the adsorption system?

Prashant Kotian · Accepted Answer

Correct answer: B. The slope of the logarithmic Freundlich plot is . If the slope is exactly zero, then . Consequently, . This implies the extent of adsorption is constant and completely independent of any further increase in pressure, which is the definition of achieving a saturated monolayer (high-pressure regime).

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