How does entropy changes with
a. Increase in temperature
b. Decrease in pressure?

Explanation

To understand how entropy changes with an increase in temperature and a decrease in pressure, we can break down the concepts step by step.

### Step-by-Step Solution:

**Step 1: Understand Entropy**
- Entropy is a measure of the disorder or randomness in a system. The higher the entropy, the greater the disorder.
- Mathematically, entropy (S) can be expressed as the ratio of the thermal energy (Q) of the system to the temperature (T) of the system:
\[
...