Final answer:
To find the equilibrium constant Keq for the reaction N2 + 3H2 ⇒ 2NH3 with given concentrations, one would use the equilibrium expression Keq = [NH3]^2 / ([N2][H2]^3). However, without all necessary equilibrium concentrations, Keq cannot be determined. An example with all concentrations provided demonstrates how Keq might be used in practice.
Step-by-step explanation:
The question is asking for the value of the equilibrium constant Keq for the synthesis of ammonia (NH3) from nitrogen (N2) and hydrogen (H2) gases. The balanced chemical equation for the reaction is N2(g) + 3H2(g) ⇒ 2NH3(g). The equilibrium constant expression (Keq) for this reaction would be Keq = [NH3]^2 / ([N2][H2]^3), where each concentration is raised to the power of its coefficient in the balanced equation.
Given that we know the equilibrium concentrations of NH3 and H2, but the equilibrium concentration of N2 is not provided, we cannot calculate Keq with the information given. However, using the equilibrium concentrations from similar problems where Keq was 13.7, we can provide an example of how to find the equilibrium concentration of a reactant or product. If the equilibrium concentrations of N2 and H2 were 0.055 M and 1.62 M, and Keq is 13.7, we could find the equilibrium concentration of NH3 by rearranging the Keq equation to solve for [NH3].