7 moles of ammonia in 14 liters of water ,at equilibrium 0.2 moles ammonium was found. What is the balance chemical equation and calculate its equilibrium constant

The balanced chemical equation for the equilibrium reaction is:

NH3 (aq) <=> NH4+ (aq)

The equilibrium constant, Kc, is calculated using the formula:

Kc = [NH4+] / [NH3]

Plugging in the values:

Kc = 0.2 moles / 7 moles

Kc = 0.0286

Therefore, the equilibrium constant for the reaction is 0.0286.