Sponetaneous adsorption of a gas on solid surface is an exothermic process because

Options

A. `DeltaH` increases for system.
B. `DeltaS` increases for gas.
C. `DeltaS` decreases for gas.
D. `DeltaG` increases for gas.

Explanation

To solve the question regarding why the spontaneous adsorption of a gas on a solid surface is an exothermic process, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understanding Adsorption**:
- Adsorption is the process where gas molecules adhere to the surface of a solid. This process involves the formation of bonds between the gas molecules and the solid surface.

2. **Bond Formation**:
...