Consider the following reaction: NH4HS( s )NH3( g )+H2S( g ) An equilibrium mixt

Question

Consider the following reaction:
NH4HS(s)NH3(g)+H2S(g)
An equilibrium mixture of this reaction at a certain temperature was found to have [NH3]= 0.270 Mand [H2S]= 0.360 M .

Part A

What is the value of the equilibrium constant (Kc) at this temperature?

Consider the following reaction:
NH4HS(s)NH3(g)+H2S(g)
An equilibrium mixture of this reaction at a certain temperature was found to have [NH3]= 0.270 Mand [H2S]= 0.360 M .

Part A

What is the value of the equilibrium constant (Kc) at this temperature?

Explanation / Answer

For the reaction,

NH4HS(s) <---> NH3(g) + H2S(g)

Equilibrium Constant will be,

Kc = [NH3].[H2S]

Since NH4HS is in solid state

Equilibrium concentrations of the products are given

[NH3] = 0.270M

[H2S] = 0.360M

So,

Kc = 0.270*0.360

Kc = 0.0972

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