Calculate the standard free energy for the reaction given.
2 CH₃OH(l) + 3 O₂(g) → 2 CO₂(g) + 4 H₂O(l)

Question

Calculate the standard free energy for the reaction given. 2 CH₃OH(l)+ 3 O₂(g)→ 2 CO₂(g)+ 4 H₂O(l)

Quizplus · Accepted Answer

To calculate the standard free energy change for a reaction, we use the equation 
ΔG° = ΣnΔG°f(products) - ΣnΔG°f(reactants)
where ΔG°f is the standard free energy of formation.
Using standard free energy of formation values from a table, we get 
ΔG° = [2(−389.3)+4(−237.13)] −[2(−393.52)+3(0)] 
ΔG° = −1404.8 kJ 
Therefore, the best choice is (C) -1404.8 kJ.

Calculate the Standard Free Energy for the Reaction Given