The equilibrium constant expression for this system is Keq=[NH3][H2S]
The ratio of the equilibrium concentrations of the products to the concentrations of the reactants raised to their respective powers to match the coefficients in the equilibrium equation is K for a system in equilibrium, according to the law of mass action. The equilibrium constant expression is known as the ratio.
Therefore, the equilibrium constant expression for this system is Keq=[NH3][H2S]
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