Question

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

What is the reaction?

A)2NO+Br2 = 2NOBr
B)2NO = 2NOBr + Br2
C)2NOBr = 2NO+Br2
D)O Br2 = 2NO + 2NOBr

Answer 1

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

Step-by-step 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)=([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`