(hypochlorous acid) is produced by bubbling chlorine gas through a suspension of solid mercury(ii) oxide particles in liquid water according to the equation 2hgo(s)+h2o(l)+2cl2(g)⇌2hocl(aq)+hg o⋅hgcl2(s) what is the equilibrium-constant expression for this reaction?

The equilibrium constant expression for this reaction is . This is an example of a heterogeneous equilibrium wherein the states of the reactants and products are different. In such a case, only the concentration of the gaseous and aqueous substances are included in the equilibrium constant expression.

Further Explanation:

The equilibrium constant expression is the ratio of the concentration of the products and the concentration of reactants.  

The guidelines in writing the equilibrium constant expressions are as follows:

Note: Pure substances (i.e. solids and liquids) are not included in the equilibrium constant expression as their concentrations are constant.

The numerical equivalent of the Keq expression is called the equilibrium constant. It has a specific value for a given temperature. The equilibrium constant provides information about the spontaneity and progress of an equilibrium reaction.

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Keywords: equilibrium constant expression, equilibrium

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