Write the differences between physisorption and chemisorption with respect to the following :
(i) Specificity (ii) Temperature dependence
(iii) Reversibility and (iv) Enthalpy change

Explanation

### Step-by-Step Text Solution:

**Differences between Physisorption and Chemisorption:**

1. **Specificity:**
- **Physisorption:** It is non-specific in nature. This means that physisorption can occur between a wide range of adsorbates and adsorbents without any specific requirement.
- **Chemisorption:** It is highly specific. Chemisorption occurs only when there is a specific interaction between the adsorbate and the adsorbent, often involving the formation of chemical bonds.

...