If a reaction vessel initially contains only CO and NH3 at concentrations of 1.00 M and 2.00 M, respectively, what will the concentration of HCONH2 be at equilibrium?

Respuesta :

This is an incomplete question, here is the complete question.

[tex]CO(g)+NH_3(g)\rightleftharpoons HCONH_2(g)[/tex], Kc = 0.810

If a reaction vessel initially contains only CO and NH₃ at concentrations of 1.00 M and 2.00 M, respectively, what will the concentration of HCONH₂ be at equilibrium?

Answer : The concentration of HCONH₂ at equilibrium is, 3.69 M

Solution :  Given,

Initial concentration of [tex]CO[/tex] and [tex]NH_3[/tex] is, 1.00 M  and 2.00 M

The given equilibrium reaction is,

                          [tex]CO+NH_3\rightleftharpoons HCONH_2[/tex]

Initially              1.00   2.00           0

At equilibrium  (1.00-x) (2.00-x)    x

The expression of [tex]K_c[/tex] will be,

[tex]K_c=\frac{[HCONH_2]}{[CO][NH_3]}[/tex]

[tex]0.810=\frac{(x)}{(1.00-x)\times (2.00-x)}[/tex]

By solving the terms, we get:

x = 3.69 M

Thus, the concentration of HCONH₂ at equilibrium is, 3.69 M