MahdFrittbrobind
contestada

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

Respuesta :

Edufirst

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


Otras preguntas