Adsorption of a gas on a surface follows Freundlich...

Adsorption of a gas on a surface follows Freundlich adsorption isotherm. Plot of $\log \frac{x}{m}$ versus $\log p$ gives a straight line with slope equal to $0.5$, then :( $\frac{x}{m}$ is the mass of the gas adsorbed per gram of adsorbent)(a) Adsorption is independent of pressure. (b) Adsorption is proportional to the pressure. (c) Adsorption is proportional to the square root of pressure. (d) Adsorption is proportional to the square of pressure.

Adsorption of a gas on a surface follows Freundlich adsorption isotherm. Plot of $\log \frac{x}{m}$ versus $\log p$ gives a straight line with slope equal to $0.5$, then :( $\frac{x}{m}$ is the mass of the gas adsorbed per gram of adsorbent)(a) Adsorption is independent of pressure.
(b) Adsorption is proportional to the pressure.
(c) Adsorption is proportional to the square root of pressure.
(d) Adsorption is proportional to the square of pressure.

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Freundlich Adsorption Isotherm

The Freundlich adsorption isotherm is an empirical model used to describe the adsorption of gases or solutes on heterogeneous surfaces. It assumes that surface energies are exponentially distributed, leading to a non-linear relationship between the adsorbed amount and the pressure or concentration of adsorbates. This isotherm is widely applied in surface science and environmental engineering to characterize adsorption processes where a simple monolayer assumption is not sufficient.

Power Law Relationship in Adsorption

The power law relationship in adsorption is observed when the amount of substance adsorbed on a surface is related to the pressure or concentration raised to a certain exponent. In log-log plots, this relationship transforms into a linear plot, where the slope corresponds to the exponent in the power law. This concept is crucial to understanding how adsorptive capacity scales with changing external conditions.

Logarithmic Plot Analysis

Logarithmic plot analysis is a method used to linearize non-linear relationships by applying logarithms to both variables in a power law equation. This technique is particularly useful in adsorption studies to extract the exponent from the Freundlich isotherm, thereby quantifying the sensitivity of adsorption with respect to changes in pressure or concentration.

Transcript

Please give Ace some feedback