Consider the reaction. At equilibrium, the concentrations are as follows. [NOCl] = 1.4 ´ 10–2 M [NO] = 1.2 ´ 10–3 M [Cl2] = 2.2 ´ 10–3 M What is the value of Keq for the reaction expressed in scientific notation?

Respuesta :

2NOCl ⇄ 2NO + Cl₂

K = [NO]²[Cl₂]/[NOCl]
K = [0,0012]²[0,0022]/[0,014]²
K = 0,000000003/0,000196
K = 0,000016163

Answer: For the given chemical reaction, value of [tex]k_{eq}[/tex] is [tex]1.616\times 10^{-5}[/tex]

Explanation: The chemical reaction according to the question is:

[tex]2NOCl\rightarrow 2NO+Cl_2[/tex]

Equilibrium constant, [tex]k_{eq}[/tex] for the following reaction is given by:

[tex]k_{eq}=\frac{[NO]^2[Cl_2]}{[NOCl]^2}[/tex]

Given:

[tex][NO]=1.2\times 10^{-3}M[/tex]

[tex][Cl_2]=2.2\times 10^{-3}M[/tex]

[tex][NOCl]=1.4\times 10^{-2}M[/tex]

Putting values in above equation we get:

[tex]k_{eq}=\frac{(1.2\times 10^{-3})^2(2.2\times 10^{-3})}{(1.4\times 10^{-2})^2}[/tex]

[tex]k_{eq}=1.616\times 10^{-5}[/tex]