Nitrogen reacts with fluorine to form nitrogen trifluoride: Calc...

Question

Nitrogen reacts with fluorine to form nitrogen trifluoride:  Calculate ∆G°, and determine whether the equilibrium composition should favor reactions or products at 25 °C(a) ∆G° = -6.7 kJ; the equilibrium composition should favor products. (b) ∆G° = -332 kJ; the equilibrium composition should favor reactants (c) ∆G° = -166 kJ; the equilibrium composition should favor products (d) ∆G° = +82.6 kJ; the equilbirum composiiton should favor reactants.

Accepted Answer

Identify the balanced chemical equation for the reaction between nitrogen (N2) and fluorine (F2) to form nitrogen trifluoride (NF3). The balanced equation is N2 + 3F2 → 2NF3.. Understand that the Gibbs free energy change (∆G°) for a reaction indicates the spontaneity of the reaction at standard conditions. A negative ∆G° suggests the reaction is spontaneous and favors the formation of products, while a positive ∆G° suggests the reaction is non-spontaneous and favors the reactants.. Calculate ∆G° using the standard free energy of formation values for the reactants and products involved in the reaction. The formula to use is ∆G° = ∑∆G°f(products) - ∑∆G°f(reactants), where ∆G°f represents the standard free energy of formation.. Determine the sign of ∆G° (positive or negative) to predict whether the equilibrium composition of the reaction favors the reactants or the products at 25 °C.. Compare the calculated ∆G° value with the options provided to select the correct answer that includes both the value of ∆G° and the correct prediction regarding whether the equilibrium favors reactants or products.

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Key Concepts

Gibbs Free Energy (∆G)

Equilibrium Constant (K)

Temperature Effects on Reaction Spontaneity