Calculate `DeltaS` for the formation of quantity of air containing 1 mole of a gas by mixing nitrogen and oxygen. (In air `N_(2) = 80%`and `O_(2) =20%)`

Explanation

To calculate the change in entropy (ΔS) for the formation of air containing 1 mole of gas by mixing nitrogen (N₂) and oxygen (O₂), we can follow these steps:

### Step 1: Determine the composition of the gas mixture
- Given that air consists of 80% nitrogen and 20% oxygen, we can express this in terms of moles for 1 mole of air:
- Moles of nitrogen (N₂) = 80% of 1 mole = 0.8 moles
- Moles of oxygen (O₂) = 20% of 1 mole = 0.2 moles

### Step 2: Calculate the mole fractions
...