Respuesta :

The question is incomplete, here is the complete question:

Consider the reaction  [tex]4NH_3(g)+7O_2(g)\rightarrow 2N_2O_4(g)+6H_2O(g)[/tex]

Initially, [tex][NH_3(g)]=[O_2(g)][/tex] = 3.60 M; at equilibrium [tex][N_2O_4(g)]=0.60M[/tex]  . Calculate  the equilibrium concentration for [tex]NH_3[/tex]

Answer: The equilibrium concentration of ammonia is 2.8 M

Explanation:

We are given:

Initial concentration of [tex][NH_3(g)][/tex] = 3.60 M

Initial concentration of [tex][O_2(g)][/tex] = 3.60 M

For the given chemical equation:

                     [tex]4NH_3(g)+7O_2(g)\rightarrow 2N_2O_4(g)+6H_2O(g)[/tex]

Initial:               3.60        3.60            

At eqllm:      3.60-4x     3.60-7x           2x             6x

We are given:

Equilibrium concentration of [tex][N_2O_4(g)][/tex] = 0.60 M

Evaluating the value of 'x'

[tex]\Rightarrow 2x=0.60\\\\\Rightarrow x=\frac{0.60}{2}=0.2[/tex]

So, equilibrium concentration of [tex]NH_3=(3.60-4x)=(3.60-(4\times 0.2))=2.8M[/tex]

Hence, the equilibrium concentration of ammonia is 2.8 M