The expression for the entropy change when a gas expands from volume `V_(1)` to volume `V_(2)` at constant temperature T is `DeltaS_(T)= " …..................." `

Explanation

To derive the expression for the change in entropy (ΔS) when a gas expands from volume \( V_1 \) to volume \( V_2 \) at constant temperature \( T \), we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Entropy Change**:
The change in entropy (ΔS) for a reversible process can be expressed as:
\[
\Delta S = \frac{\Delta Q_{\text{rev}}}{T}
...