Question

Write the equilibrium-constant expression for the reaction a(g)+b(g) = 2c(g) + d(g)

Answer 1

Chemical reaction: A(g) + B(g) ⇄ 2C(g) + D(g).
The equilibrium constant (Keq) is a ratio of the concentration of the products (in this reaction C and D) to the concentration of the reactants (in this reaction A and B):
Keq = [C]² · [D] / [A] · [B].
[A], [B] are equilibrium concentrations of reactants.
[C], [D] are equilibrium concentrations of products.

Answer 2

Answer: The expression of equilibrium constant is given below.

Step-by-step 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
`K_(c)`

For a general chemical reaction:

`aA+bB\rightarrow cC+dD`

The expression for
`K_(c)` is written as:

`K_(c)=([C]^c[D]^d)/([A]^a[B]^b)`

The given chemical equation follows:

`a(g)+b(g)\rightarrow 2c(g)+d(g)`

The expression of
`K_(c)` is written as:

`K_(c)=([c]^2* [d])/([a]* [b])`

Hence, the expression of equilibrium constant is given above.