The value of kc for the reaction between water vapor and dichlorine monoxide, h2o(g) 1 cl2o(g) 4 2 hocl(g) is 0.0900 at 25°c. determine the equilibrium concentrations of all three compounds at 25°c if the starting concentrations of both reactants are 0.00432 m and no hocl is present.

[HOCl] = 0.001 127 mol·L⁻¹; [H₂O] = [Cl₂O] = 0.003 76 mol·L⁻¹

Explanation:

The balanced equation is

H₂O + Cl₂O ⇌ 2HOCl

Data:

     Kc = 0.0900

[H₂O] = 0.004 32 mol·L⁻¹

[Cl₂O] = 0.004 32 mol

1. Set up an ICE table.

2. Calculate the equilibrium concentrations

[HOCl] = 2x mol·L⁻¹ = 2 × 5.63 × 10⁻⁴ mol·L⁻¹ =0.001 127 mol·L⁻¹

[H₂O] = [Cl₂O] = (0.004 32 - 0.000 563) mol·L⁻¹ = 0.003 76 mol·L⁻¹

Check:

OK.

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