Question

8. What is the change in entropy when 5.46 mL of liquid benzene (C6H6, d = 0.879 g/mL) is combusted in the presence of 27.3 L of oxygen gas, measured at 298 K and 1 atm pressure? (R = 0.0821 L · atm/(K · mol))
2 C6H6(l) + 15 O2(g)  12 CO2(g) + 6 H2O(l) ; S° = –437.7 J/K at 298 K
A) –488 J/K B) –46.0 J/K C) –26.9 J/K D) –13.4 J/K E) –515 J/K