Use the table of standard entropy values to determine ΔSºreaction for the following reaction:

2CH3OH (l) + 3O2 (g) → 2CO2 (g) + 4 H2O (g)

A) + 70.627 J/mol*K

B) - 70.627 J/mol*K

C) + 313.766 J/mol*K

D) - 313.766 J/mol*K

Standar molar entropies from a table:

CH3OH (l) : 126.8 J / K*mol

O2 (g) : 205.1 J / K*mol

CO2 (g) : 213.7 J/K*mol

H2O (g) : 188.8 J/J*mol

Now use the coefficients of the reaction and sum the product entropies less the reactant entropies:

4*188.8 + 2*213.7 - 3*205.1 - 2 * 126.8 = 313.7 J/mol*K

Answer: option C) + 3173.766 J/mol*K