`1 mol` of an ideal gas is allowed to expand isothermally at `27^(@)C` untill its volume is tripled. Calculated `Delya_(sys)S` and `Delta_(univ)S` under the following conditions:
a. The expansion is carried out reversibly.
b. The expansion is a free expansion.

Explanation

To solve the problem step by step, we will calculate the change in entropy for the system (ΔS_sys) and the universe (ΔS_univ) for both reversible and free expansion of an ideal gas.

### Given Data:
- Number of moles (n) = 1 mol
- Initial temperature (T) = 27°C = 300 K (converted to Kelvin)
- Initial volume (V1) = V
- Final volume (V2) = 3V (since the volume is tripled)

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