Question

Calculate the equilibrium constant (Kc) for the reaction between nitrogen gas (N2) and hydrogen gas (H2) to form ammonia gas (NH3) at a temperature of 400 K. The reaction is written as follows: N2(g) + 3H2(g) ⇌ 2NH3(g) Given the equilibrium concentrations are [N2] = 0.10 M, [H2] = 0.20 M, and [NH3] = 1.0 M.

Answer 1

To calculate the equilibrium constant  Kc  for the given reaction, we can use the formula:Kc = [NH3]^2 /  [N2] * [H2]^3 Given the equilibrium concentrations are [N2] = 0.10 M, [H2] = 0.20 M, and [NH3] = 1.0 M.Now, we can plug the given concentrations into the formula:Kc =  1.0 ^2 /  0.10 *  0.20 ^3 Kc = 1 /  0.10 * 0.008 Kc = 1 / 0.0008Kc = 1250Therefore, the equilibrium constant  Kc  for the reaction between nitrogen gas  N2  and hydrogen gas  H2  to form ammonia gas  NH3  at a temperature of 400 K is 1250.