Define equilibrium constant. Write the equilibrium constant expression for the reaction of
`H_(2)(g)+I_(2)(g)hArr2HI(g)`
and its reverse reaction. How are the two equilibrium constants related?

Explanation

The ratio of product of molar concentrations of products to the product of molar concentrations.of reactants is called equilibrium constant `(K_(c))`
Given equation
`H_(2_((g)))+I_(2_((g))) hArr 2HI_((g))`
`K_(c)=([HI]^(2))/([H_(2)][I_(2)])`
Reverse reaction is
`2HI_((g)) hArr H_(2_((g)))+I_(2_((g)))`
`K_(c)=([H_(2)][I_(2)])/([HI]^(2))`
The two equilibrium constants of above reactions are inyersely related.