Question 92 of 177

When 1 mole of an ideal gas at 20 atm pressure and 15 L volume expands such that the final pressure becomes 10 atm and the final volume become 60 L. Calculate entropy change for the process (Cpm = 30.96 J mole–1 K–1)

(1) 80.2 J.klmo1–1

(2) 62.42 kJ.k–1 mol–1

(3) 120 x 102 J1c1mol–1

(4) 27.22 J.k–1mor