Calculate ΔG° for the reaction of ammonia with fluorine. 2NH₃(g) + 5F₂(g) → N₂F₄(g) + 6HF(g)

Question

Quizplus · Accepted Answer

To calculate ΔG°, we use the formula ΔG° = ΣnΔG°f(products) - ΣnΔG°f(reactants), where ΣnΔG°f is the standard free energy of formation of a compound in its standard state. We can find the standard free energy of formation values in a table of thermodynamic data. Using this formula and the values from the table, we get:

ΔG° = [1(-16.6) + 6(-273.3)] - [2(111.7) + 5(79.0)]
ΔG° = -1539.7 kJ

The negative sign indicates that the reaction is spontaneous and exothermic. Therefore, the best choice is D, -1539.7 kJ.

Calculate ΔG° for the Reaction of Ammonia with Fluorine