It is desired to cool a variety of aromatic oil in a heat exchanger from \(515 \mathrm{~K}\) to \(315 \mathrm{~K}\) at a rate of \(4750 \mathrm{~kg} / \mathrm{hr}\). The temperature of the cooling water is \(290 \mathrm{~K}\) and it is supplied at a rate of \(9500 \mathrm{~kg} / \mathrm{hr}\). We are given that the average specific heat of the aromatic oil is \(3.2 \mathrm{~kJ} / \mathrm{kg}-\mathrm{K}\), and the average specific heat of water is \(4.185 \mathrm{~kJ} / \mathrm{kg}-\mathrm{K}\). Determine the entropy change of the process and check whether the process is reversible or irreversible.