Calculate the equilibrium constant of NH4HS H2S + NH3
To calculate the equilibrium constant, we need to write the balanced chemical equation for the reaction. The given reaction is:
NH4HS ⇌ H2S + NH3
The equilibrium constant (K) for this reaction is given by:
K = ([H2S] × [NH3])/[NH4HS]
To calculate the equilibrium constant, we need the concentrations of the reactants and products at equilibrium.
If you are given the initial concentrations of NH4HS, H2S, and NH3, as well as the changes in concentration at equilibrium, you can use the ICE (Initial-Change-Equilibrium) method to determine the equilibrium concentrations.
Assuming the initial concentration of NH4HS is [NH4HS]₀, and let's say the changes in concentration at equilibrium are x for H2S and NH3, we can write the equilibrium concentrations as:
[NH4HS] = [NH4HS]₀ - x
[H2S] = x
[NH3] = x
Now, substitute these equilibrium concentrations into the equilibrium constant expression:
K = ([H2S] × [NH3])/[NH4HS]
= (x × x)/([NH4HS]₀ - x)
Therefore, if you know the initial concentration of NH4HS and the changes in concentration at equilibrium, you can substitute those values into this equation to calculate the equilibrium constant (K).