Question

Adsorption due to strong chemical forces is called___________
A. Chemisorption
B. Physisorption
C. Reversible adsorption
D. Both (B) and (C)

Answer 1

Hint: We need to understand adsorption in order to respond to this question. Adsorption takes place between the adsorbate and adsorbent due to physical or chemical bonding.

Complete Step by Step Solution:
The process of chemisorption is additionally called chemical adsorption. In the method of chemisorption or chemical adsorption, the adsorption takes place between the adsorbate and adsorbent due to strong chemical or ionic bonding.

In the method of physical adsorption, the adsorption takes place between the adsorbate and adsorbent due to weak hydrogen bonding or Van Der Waals force.

In the method of reversible adsorption, the adsorption takes place between the adsorbate and adsorbent due to weak hydrogen bonding or Van Der Waals force. It is physical adsorption.

Adsorption due to strong chemical forces is called chemisorption.
Thus the correct option is A.

Additional information:
The properties of chemisorption are as follows-
1. It is high specificity which means it's extremely specific.
2. Chemisorption is irreversible in nature and it additionally favours in presence of high pressure.
3. Chemisorption depends on the surface area of the adsorbent because as the surface area of the adsorbent will increase, chemisorption additionally will increase.
4. Chemisorption is the slowest process.
5. It is not independent of temperature. It first increases with increase in temperature then decreases.

Note: There are two types of adsorption present. One is physical adsorption and another one is chemical adsorption. Physical adsorption has weak bond and chemisorption has chemical bond between adsorbate and adsorbent.