GATE Mechanical Engineering (ME) 2017 Shift 2 Solved Paper

One kg of an ideal gas (gas constant R = 287 J/kg K) undergoes an irreversible process from state-1 (1 bar, 300 K) to state-2 (2 bar, 300 K). The change is specific entropy (s₂-s₁) of the gas (in J/kg K) in the process is ________.