Question

Which of the following is not the characteristic of chemisorption?

• A. It is a multilayer adsorption
• B. It is highly specific in nature
• C. It is irreversible
• D. High temperature is favorable for adsorption

Hint:

Chemisorption is \[ \boxed{ \begin{aligned} &\text{Monolayer adsorption}, &\text{Highly specific}, &\text{Generally irreversible}, &\text{Favoured at higher temperatures.} \end{aligned} } \]

Answer 1

The Correct Option is A

Step 1: Recall the characteristics of chemisorption. Chemisorption involves the formation of chemical bonds between the adsorbate and the adsorbent surface. Hence, it is \[ \boxed{\text{highly specific and generally irreversible}.} \]

Step 2: Identify the incorrect statement. Chemisorption forms \[ \boxed{\text{only a monolayer}} \] on the adsorbent surface. Therefore, the statement \[ \boxed{\text{``It is a multilayer adsorption''}} \] is not a characteristic of chemisorption. High temperature generally favors chemisorption because it is an activated process.

Step 3: Choose the correct option. Hence, \[ \boxed{\text{The incorrect characteristic is ``It is a multilayer adsorption.''}} \] Therefore, the correct option is \(\boxed{(A)}\).