AP EAMCET · Chemistry · Surface Chemistry

Freundlich adsorption isotherms for the physical adsorption of a gas at temperature $T_{1}, T_{2}$ and $T_{3}$ are shown in the graph given below. The correct relationship between $T_{1}, T_{2}$ and $T_{3}$ is

A $T_{1} < T_{2} < T_{3}$
B $T_{3} < T_{1} < T_{2}$
C $T_{3} < T_{2} < T_{1}$
D $T_{2} < T_{1} < T_{3}$

Verified Solution

Answer & Solution

Correct Answer

(C) $T_{3} < T_{2} < T_{1}$

Step-by-step Solution

Detailed explanation

Freundlich adsorption isotherm: This gives an empirical relationship between the quantity of a gas adsorbed by a unit mass of solid adsorbent and pressure at a particular temperature. It is expressed as: xm=k·p1/n n>1⇒logxm=log k+1nlog P Since…

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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Freundlich adsorption isotherms for the physical adsorption of a gas at temperature T1, T2 and T3 are shown in the graph given below. The correct relationship between T1, T2 and T3 is

Step-by-step Solution

Freundlich adsorption isotherms for the physical adsorption of a gas at temperature $T_{1}, T_{2}$ and $T_{3}$ are shown in the graph given below. The correct relationship between $T_{1}, T_{2}$ and $T_{3}$ is