Question

consider the equilibrium system described by the chemical reaction below which has a value of kc equal to 1.2 x 10^-4 at a certain temperature. if a solid sample of nh4sh decomposes, what will he equilibrium constant

Answer 1

If a solid sample of NH₄SH decomposes with an equilibrium constant of 1.2 x 10⁻⁴, the equilibrium concentration of NH₃ will be 1.1 × 10⁻² M.

What is the equilibrium constant?

The equilibrium constant (Kc) is the ratio of the concentration of products to the concentration of the reactants, each raised to their respective stoichiometric coefficients. It does not include solids or pure liquids.

• Step 1: Write the balanced equation.

NH₄SH(s) ⇄ NH₃(g) + H₂S(g)

• Step 2: Make an ICE chart.

        NH₄SH(s) ⇄ NH₃(g) + H₂S(g)

I                                0            0

C                             +x           +x

E                                x            x

• Step 3: Write the expression of Kc and solve for x.

Kc = [NH₃] [H₂S] = x² = 1.2 x 10⁻⁴

x = 1.1 × 10⁻² M

If a solid sample of NH₄SH decomposes with an equilibrium constant of 1.2 x 10⁻⁴, the equilibrium concentration of NH₃ will be 1.1 × 10⁻² M.

The question was incomplete. This is the complete question.

Consider the equilibrium system described by the chemical reaction below, which has a value of Kc equal to 1.2 x 10⁻⁴ at a certain temperature. If a solid sample of NH₄SH decomposes, what will the equilibrium concentration of NH₃ be? NH₄SH(s) ⇄ NH₃(g) + H₂S(g)

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