Final answer:
To calculate the equilibrium molar concentration of NH3 in a reaction vessel, use the concentrations of N2 and H2 along with the equilibrium constant. Plugging in the given values, the equilibrium molar concentration of NH3 is determined to be 0.10 M.
Step-by-step explanation:
To calculate the equilibrium molar concentration of NH3, we can use the given information and the equilibrium constant (Kc) of the reaction. According to the balanced equation, the stoichiometry is N2: 2, H2: 3, and NH3: 2.
Using the concentrations of N2 and H2 (1.2 M and 0.24 M respectively) and the Kc value (0.50), we can set up an expression: Kc = ([NH3]2)/([N2][H2]3)
By plugging in the known values and solving for [NH3], we get [NH3] = 0.10 M.