Answer: [tex]2NO+Br_2\rightleftharpoons 2NOBr[/tex]
Explanation:
Equilibrium constant 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_{eq}[/tex]
The expression for [tex]K_{eq}[/tex] is given as:
[tex]K_{eq}=\frac{[NOBr]^2}{[NO]^2[Br_2]}[/tex]
Thus in the reaction, [tex]NOBr[/tex] has to be product and [tex]NO[/tex] and [tex]Br_2[/tex] has to be reactants, the reaction has to be [tex]2NO+Br_2\rightleftharpoons 2NOBr[/tex]
