Question

The equilibrium expression for a chemical reaction is Keq = [NOBr]/[NO]? Br2)

Answer 1

Answer: $2NO+Br_2\rightleftharpoons 2NOBr$

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 $K_{eq}$

The expression for $K_{eq}$ is given as:

$K_{eq}=\frac{[NOBr]^2}{[NO]^2[Br_2]}$

Thus in the reaction, $NOBr$ has to be product and $NO$ and $Br_2$ has to be reactants, the reaction has to be $2NO+Br_2\rightleftharpoons 2NOBr$