In a reversible heat interaction, 54 kJ of energy is transferred from the surroundings to a thermodynamic

Question:

In a reversible heat interaction, 54 kJ of energy is transferred from the surroundings to a thermodynamic system. The process occurs isothermally at 425 K. Determine the entropy change of the system. How would the entropy of the system change if the process were irreversible rather than reversible?