Answer: The equilibrium constant expression for the reaction is written below
Explanation:
Equilibrium constant in terms of concentration is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as [tex]K_{c}[/tex]
For a general chemical reaction:
[tex]aA+bB\rightleftharpoons cC+dD[/tex]
The expression for [tex]K_{eq}[/tex] is written as:
[tex]K_{eq}=\frac{[C]^c[D]^d}{[A]^a[B]^b}[/tex]
For the given chemical reaction:
[tex]PCl_5(g)\rightleftharpoons PCl_3(g)+Cl_2(g)[/tex]
The expression of equilibrium constant for the reaction is:
[tex]K_{c}=\frac{[PCl_3][Cl_2]}{[PCl_5]}[/tex]
Hence, the equilibrium constant expression for the reaction is written above.
