When ammonia is placed in a reactor and the temperature is increased to 745 C, some of

Question:

When ammonia is placed in a reactor and the temperature is increased to 745 °C, some of the ammonia decomposes to nitrogen and hydrogen. The initial concentration of ammonia was 0.0240 M. After equilibrium is attained, the concentration of ammonia is 0.0040 M. Calculate Kc at 745 °C for