Which of the following options are correct?

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) Chemical adsorption (chemisorption) occurs when adsorbate molecules are held to the adsorbent surface by chemical forces. Effect of temperature: $

Vedclass · Accepted Answer

$a$ and $c$ represent chemisorption

Vedclass · Answer

(C) Chemical adsorption (chemisorption) occurs when adsorbate molecules are held to the adsorbent surface by chemical forces. Effect of temperature: $1$. Physical adsorption (physisorption) involves weak van der Waals forces and is exothermic. According to Le Chatelier's principle, an increase in temperature favors desorption, so physisorption decreases continuously with increasing temperature. Plot $(b)$ represents physisorption. $2$. Chemisorption involves the formation of chemical bonds and typically requires an activation energy. Therefore, it increases initially with temperature, shows a maximum, and then decreases. Plot $(a)$ represents this behavior. $3$. Plot $(c)$ shows the potential energy profile for chemisorption, where the high activation energy (indicated by $150 \ kJ \ mol^{-1}$) is characteristic of chemical bond formation. Thus, plots $(a)$ and $(c)$ represent chemisorption.

Similar Questions

Assertion $(A)$: van der Waals' forces are responsible for chemisorption.
Reason $(R)$: High temperature is favourable for chemisorption.
The correct answer is

In a plot of $\log \left( \frac{x}{m} \right)$ $vs$ $\log p$,for the adsorption of a gas on a solid,a straight line is obtained. The slope of that straight line is

For a linear plot of $\log(x/m)$ versus $\log p$ in a Freundlich adsorption isotherm,which of the following statements is correct? ($k$ and $n$ are constants)

Which of the following can adsorb the largest volume of hydrogen gas?

If $x$ is the amount of adsorbate and $m$ is the amount of adsorbent,which of the following relations is not related to the adsorption process?

Vedclass Test Series

Exam Paper Generator

Online Exam Module