JEE Main 2022 · 30 Jul · Shift 2 · Chemistry Q34

← JEE Main 2022 · 30 Jul · Shift 2

ChemistrySingle correct+4 / -1Question 34 of 90

Freundlich's adsorption isotherm (in terms of concentration) is given by the expression; $\dfrac xm=K\cdot C^{1/n}$ . The possible conclusions that can be drawn from the expression are :

(A) When $\frac1n=1$ , the adsorption is directly proportional to concentration.

(B) When $\frac1n=0$ , the adsorption is independent of concentration.

(D) When n = 0, a plot of x/m vs C is a curve.

Choose the correct option from the following :

(A) and (B) only

(B) and (D) only

(B), (C) and (D) only

(A), (B) and (C) only

Answer and worked solution

Official answer: D

Exponent. $\frac1n=1$ gives $\frac xm=KC$ (A true); $\frac1n=0$ gives $\frac xm=K$ , independent of C (B true). The key also takes (C), reading the constant case as a line parallel to the C-axis; (D) contradicts it.

(D)

Topics:Adsorption

← Previous question Next question →

JEE Main 2022 · 30 Jul · Shift 2, Chemistry question 34