Differentiate between the following:
(i) Efflorescence and Deliquescence

Explanation

To differentiate between efflorescence and deliquescence, we can follow these steps:

### Step 1: Define Efflorescence
Efflorescence is the process where a substance loses its water of crystallization when exposed to air. This typically occurs when the air is dry, leading to the formation of a powdery residue as the water evaporates.

### Step 2: Define Deliquescence
Deliquescence is the process where a substance absorbs moisture from the air, including water vapor and carbon dioxide, resulting in the formation of a liquid solution or a solid hydrated substance. This happens when the humidity in the air is high.

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